1071251992 has 32 divisors (see below), whose sum is σ = 2024492400. Its totient is φ = 531402624.

The previous prime is 1071251983. The next prime is 1071251999. The reversal of 1071251992 is 2991521701.

It is a super-2 number, since 2×1071251992² = 2295161660727936128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071251999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221058 + ... + 1221934.

Almost surely, 2^1071251992 is an apocalyptic number.

It is an amenable number.

1071251992 is a deficient number, since it is larger than the sum of its proper divisors (953240408).

1071251992 is a wasteful number, since it uses less digits than its factorization.

1071251992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 37.

The square root of 1071251992 is about 32729.9861289308. The cubic root of 1071251992 is about 1023.2078911502.

The spelling of 1071251992 in words is "one billion, seventy-one million, two hundred fifty-one thousand, nine hundred ninety-two".