1415118978 has 64 divisors (see below), whose sum is σ = 3870424320. Its totient is φ = 373216896.

The previous prime is 1415118973. The next prime is 1415119009. The reversal of 1415118978 is 8798115141.

1415118978 is a `hidden beast` number, since 1 + 41 + 511 + 8 + 97 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1415118973) 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, 139075 + ... + 148902.

It is an arithmetic number, because the mean of its divisors is an integer number (60475380).

Almost surely, 2^1415118978 is an apocalyptic number.

1415118978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1415118978 is an abundant number, since it is smaller than the sum of its proper divisors (2455305342).

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

1415118978 is a wasteful number, since it uses less digits than its factorization.

1415118978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288008 (or 288002 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The square root of 1415118978 is about 37618.0671752284. The cubic root of 1415118978 is about 1122.7015401601.

The spelling of 1415118978 in words is "one billion, four hundred fifteen million, one hundred eighteen thousand, nine hundred seventy-eight".