1071038778 has 64 divisors (see below), whose sum is σ = 2390753280. Its totient is φ = 318427200.

The previous prime is 1071038767. The next prime is 1071038779. The reversal of 1071038778 is 8778301701.

It is a super-2 number, since 2×1071038778² = 2294248127959466568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071038779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126663 + ... + 134853.

It is an arithmetic number, because the mean of its divisors is an integer number (37355520).

Almost surely, 2^1071038778 is an apocalyptic number.

1071038778 is an abundant number, since it is smaller than the sum of its proper divisors (1319714502).

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

1071038778 is a wasteful number, since it uses less digits than its factorization.

1071038778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283.

The product of its (nonzero) digits is 65856, while the sum is 42.

The square root of 1071038778 is about 32726.7288007830. The cubic root of 1071038778 is about 1023.1400027591.

The spelling of 1071038778 in words is "one billion, seventy-one million, thirty-eight thousand, seven hundred seventy-eight".