1361859670 has 64 divisors (see below), whose sum is σ = 2609418240. Its totient is φ = 510681600.

The previous prime is 1361859661. The next prime is 1361859671. The reversal of 1361859670 is 769581631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 1361859670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361859671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4378815 + ... + 4379125.

It is an arithmetic number, because the mean of its divisors is an integer number (40772160).

Almost surely, 2^1361859670 is an apocalyptic number.

1361859670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361859670 is a deficient number, since it is larger than the sum of its proper divisors (1247558570).

1361859670 is a wasteful number, since it uses less digits than its factorization.

1361859670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1361859670 is about 36903.3829072620. The cubic root of 1361859670 is about 1108.4364182233.

The spelling of 1361859670 in words is "one billion, three hundred sixty-one million, eight hundred fifty-nine thousand, six hundred seventy".