1980432377 has 16 divisors (see below), whose sum is σ = 2599065600. Its totient is φ = 1461972240.

The previous prime is 1980432371. The next prime is 1980432401. The reversal of 1980432377 is 7732340891.

It is a cyclic number.

It is not a de Polignac number, because 1980432377 - 2⁶ = 1980432313 is a prime.

It is a super-2 number, since 2×1980432377² = 7844224799739740258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980432371) 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, 675377 + ... + 678302.

It is an arithmetic number, because the mean of its divisors is an integer number (162441600).

Almost surely, 2^1980432377 is an apocalyptic number.

It is an amenable number.

1980432377 is a deficient number, since it is larger than the sum of its proper divisors (618633223).

1980432377 is a wasteful number, since it uses less digits than its factorization.

1980432377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353716.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 1980432377 is about 44502.0491325961. The cubic root of 1980432377 is about 1255.7986328512.

The spelling of 1980432377 in words is "one billion, nine hundred eighty million, four hundred thirty-two thousand, three hundred seventy-seven".