1051909688 has 16 divisors (see below), whose sum is σ = 2018199480. Its totient is φ = 513723168.

The previous prime is 1051909687. The next prime is 1051909693. The reversal of 1051909688 is 8869091501.

It is a super-2 number, since 2×1051909688² = 2213027983416514688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051909687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1528595 + ... + 1529282.

Almost surely, 2^1051909688 is an apocalyptic number.

It is an amenable number.

1051909688 is a deficient number, since it is larger than the sum of its proper divisors (966289792).

1051909688 is a wasteful number, since it uses less digits than its factorization.

1051909688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057926 (or 3057922 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 1051909688 is about 32433.1572314507. The cubic root of 1051909688 is about 1017.0121740789.

The spelling of 1051909688 in words is "one billion, fifty-one million, nine hundred nine thousand, six hundred eighty-eight".