1980695088 has 30 divisors (see below), whose sum is σ = 5543195684. Its totient is φ = 660231648.

The previous prime is 1980695081. The next prime is 1980695113. The reversal of 1980695088 is 8805960891.

It is not an unprimeable number, because it can be changed into a prime (1980695081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6877270 + ... + 6877557.

Almost surely, 2^1980695088 is an apocalyptic number.

1980695088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1980695088 is an abundant number, since it is smaller than the sum of its proper divisors (3562500596).

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

1980695088 is a wasteful number, since it uses less digits than its factorization.

1980695088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754841 (or 13754832 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 1980695088 is about 44505.0007077856. Note that the first 3 decimals coincide. The cubic root of 1980695088 is about 1255.8541590301.

The spelling of 1980695088 in words is "one billion, nine hundred eighty million, six hundred ninety-five thousand, eighty-eight".