1071861788 has 6 divisors (see below), whose sum is σ = 1875758136. Its totient is φ = 535930892.

The previous prime is 1071861773. The next prime is 1071861803. The reversal of 1071861788 is 8871681701.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1071861773) and next prime (1071861803).

It is a super-2 number, since 2×1071861788² = 2297775385149113888, 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 as a sum of consecutive naturals, namely, 133982720 + ... + 133982727.

It is an arithmetic number, because the mean of its divisors is an integer number (312626356).

Almost surely, 2^1071861788 is an apocalyptic number.

It is an amenable number.

1071861788 is a deficient number, since it is larger than the sum of its proper divisors (803896348).

1071861788 is a wasteful number, since it uses less digits than its factorization.

1071861788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267965451 (or 267965449 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 47.

The square root of 1071861788 is about 32739.3003590486. The cubic root of 1071861788 is about 1023.4020035004.

The spelling of 1071861788 in words is "one billion, seventy-one million, eight hundred sixty-one thousand, seven hundred eighty-eight".