1163978480 has 80 divisors (see below), whose sum is σ = 3227364864. Its totient is φ = 381722880.

The previous prime is 1163978461. The next prime is 1163978489. The reversal of 1163978480 is 848793611.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1163978480² = 2709691803806220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163978489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32306 + ... + 58065.

Almost surely, 2^1163978480 is an apocalyptic number.

1163978480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163978480 is an abundant number, since it is smaller than the sum of its proper divisors (2063386384).

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

1163978480 is a wasteful number, since it uses less digits than its factorization.

1163978480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90414 (or 90408 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1163978480 is about 34117.1288358209. The cubic root of 1163978480 is about 1051.9174276297.

The spelling of 1163978480 in words is "one billion, one hundred sixty-three million, nine hundred seventy-eight thousand, four hundred eighty".