1977083208 has 32 divisors (see below), whose sum is σ = 5491898400. Its totient is φ = 659027664.

The previous prime is 1977083177. The next prime is 1977083219. The reversal of 1977083208 is 8023807791.

It is a super-2 number, since 2×1977083208² = 7817716022711142528, which contains 22 as substring.

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, 4576366 + ... + 4576797.

It is an arithmetic number, because the mean of its divisors is an integer number (171621825).

Almost surely, 2^1977083208 is an apocalyptic number.

1977083208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1977083208 is an abundant number, since it is smaller than the sum of its proper divisors (3514815192).

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

1977083208 is a wasteful number, since it uses less digits than its factorization.

1977083208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9153178 (or 9153168 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1977083208 is about 44464.4038304799. The cubic root of 1977083208 is about 1255.0903270913.

The spelling of 1977083208 in words is "one billion, nine hundred seventy-seven million, eighty-three thousand, two hundred eight".