1115961078 has 16 divisors (see below), whose sum is σ = 2232709056. Its totient is φ = 371855880.

The previous prime is 1115961061. The next prime is 1115961089. The reversal of 1115961078 is 8701695111.

It is a super-2 number, since 2×1115961078² = 2490738255221844168, 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 7 ways as a sum of consecutive naturals, for example, 13476 + ... + 49127.

It is an arithmetic number, because the mean of its divisors is an integer number (139544316).

Almost surely, 2^1115961078 is an apocalyptic number.

1115961078 is an abundant number, since it is smaller than the sum of its proper divisors (1116747978).

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

1115961078 is a wasteful number, since it uses less digits than its factorization.

1115961078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65579.

The product of its (nonzero) digits is 15120, while the sum is 39.

The square root of 1115961078 is about 33406.0036221036. The cubic root of 1115961078 is about 1037.2489787637.

The spelling of 1115961078 in words is "one billion, one hundred fifteen million, nine hundred sixty-one thousand, seventy-eight".