1071491968 has 32 divisors (see below), whose sum is σ = 2150941320. Its totient is φ = 531648000.

The previous prime is 1071491959. The next prime is 1071491977. The reversal of 1071491968 is 8691941701.

It is an interprime number because it is at equal distance from previous prime (1071491959) and next prime (1071491977).

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1071491968² = 2296190074977026048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15183 + ... + 48718.

Almost surely, 2^1071491968 is an apocalyptic number.

It is an amenable number.

1071491968 is an abundant number, since it is smaller than the sum of its proper divisors (1079449352).

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

1071491968 is an equidigital number, since it uses as much as digits as its factorization.

1071491968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64046 (or 64034 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 1071491968 is about 32733.6519196988. The cubic root of 1071491968 is about 1023.2842899203.

It can be divided in two parts, 1071 and 491968, that added together give a cube (493039 = 79³).

The spelling of 1071491968 in words is "one billion, seventy-one million, four hundred ninety-one thousand, nine hundred sixty-eight".