1977476976 has 50 divisors (see below), whose sum is σ = 5723395832. Its totient is φ = 659158560.

The previous prime is 1977476971. The next prime is 1977476983. The reversal of 1977476976 is 6796747791.

1977476976 is a `hidden beast` number, since 1 + 9 + 77 + 476 + 97 + 6 = 666.

It is a super-2 number, since 2×1977476976² = 7820830381220209152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977476971) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 761620 + ... + 764211.

Almost surely, 2^1977476976 is an apocalyptic number.

1977476976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1977476976 is an abundant number, since it is smaller than the sum of its proper divisors (3745918856).

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

1977476976 is a wasteful number, since it uses less digits than its factorization.

1977476976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525851 (or 1525836 counting only the distinct ones).

The product of its digits is 28005264, while the sum is 63.

The square root of 1977476976 is about 44468.8315115205. The cubic root of 1977476976 is about 1255.1736453855.

The spelling of 1977476976 in words is "one billion, nine hundred seventy-seven million, four hundred seventy-six thousand, nine hundred seventy-six".