1977088995 has 72 divisors (see below), whose sum is σ = 4052084400. Its totient is φ = 888935040.

The previous prime is 1977088973. The next prime is 1977089011. The reversal of 1977088995 is 5998807791.

It is not a de Polignac number, because 1977088995 - 2⁵ = 1977088963 is a prime.

It is a super-2 number, since 2×1977088995² = 7817761788300220050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 127156 + ... + 141854.

It is an arithmetic number, because the mean of its divisors is an integer number (56278950).

Almost surely, 2^1977088995 is an apocalyptic number.

1977088995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1977088995 is an abundant number, since it is smaller than the sum of its proper divisors (2074995405).

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

1977088995 is a wasteful number, since it uses less digits than its factorization.

1977088995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14785 (or 14775 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The square root of 1977088995 is about 44464.4689049583. The cubic root of 1977088995 is about 1255.0915516562.

The spelling of 1977088995 in words is "one billion, nine hundred seventy-seven million, eighty-eight thousand, nine hundred ninety-five".