1406780361 has 24 divisors (see below), whose sum is σ = 2326132224. Its totient is φ = 802549440.

The previous prime is 1406780357. The next prime is 1406780377. The reversal of 1406780361 is 1630876041.

It is not a de Polignac number, because 1406780361 - 2² = 1406780357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406780351) 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 23 ways as a sum of consecutive naturals, for example, 20776 + ... + 56966.

It is an arithmetic number, because the mean of its divisors is an integer number (96922176).

Almost surely, 2^1406780361 is an apocalyptic number.

It is an amenable number.

1406780361 is a deficient number, since it is larger than the sum of its proper divisors (919351863).

1406780361 is a wasteful number, since it uses less digits than its factorization.

1406780361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36821 (or 36818 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1406780361 is about 37507.0708133813. The cubic root of 1406780361 is about 1120.4920141101.

The spelling of 1406780361 in words is "one billion, four hundred six million, seven hundred eighty thousand, three hundred sixty-one".