1398260061 has 12 divisors (see below), whose sum is σ = 2203319040. Its totient is φ = 847430280.

The previous prime is 1398260021. The next prime is 1398260063. The reversal of 1398260061 is 1600628931.

1398260061 is a `hidden beast` number, since 1 + 398 + 260 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 1398260061 - 2⁶ = 1398259997 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1398259998 and 1398260025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398260063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7061821 + ... + 7062018.

It is an arithmetic number, because the mean of its divisors is an integer number (183609920).

Almost surely, 2^1398260061 is an apocalyptic number.

1398260061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1398260061 is a deficient number, since it is larger than the sum of its proper divisors (805058979).

1398260061 is a wasteful number, since it uses less digits than its factorization.

1398260061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14123856 (or 14123853 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1398260061 is about 37393.3157262097. The cubic root of 1398260061 is about 1118.2253093588.

Adding to 1398260061 its reverse (1600628931), we get a palindrome (2998888992).

The spelling of 1398260061 in words is "one billion, three hundred ninety-eight million, two hundred sixty thousand, sixty-one".