351640938 has 16 divisors (see below), whose sum is σ = 767216736. Its totient is φ = 106557840.

The previous prime is 351640909. The next prime is 351640973. The reversal of 351640938 is 839046153.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 351640896 and 351640905.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2663881 + ... + 2664012.

It is an arithmetic number, because the mean of its divisors is an integer number (47951046).

Almost surely, 2^351640938 is an apocalyptic number.

351640938 is an abundant number, since it is smaller than the sum of its proper divisors (415575798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351640938 is a wasteful number, since it uses less digits than its factorization.

351640938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327909.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 351640938 is about 18752.0915633430. The cubic root of 351640938 is about 705.8295069907.

The spelling of 351640938 in words is "three hundred fifty-one million, six hundred forty thousand, nine hundred thirty-eight".