1488978990 has 32 divisors (see below), whose sum is σ = 3970611360. Its totient is φ = 397060992.

The previous prime is 1488978977. The next prime is 1488979013. The reversal of 1488978990 is 998798841.

It is a super-2 number, since 2×1488978990² = 4434116865322840200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757099 + ... + 2757638.

It is an arithmetic number, because the mean of its divisors is an integer number (124081605).

Almost surely, 2^1488978990 is an apocalyptic number.

1488978990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1488978990 is an abundant number, since it is smaller than the sum of its proper divisors (2481632370).

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

1488978990 is a wasteful number, since it uses less digits than its factorization.

1488978990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514753 (or 5514747 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The square root of 1488978990 is about 38587.2905242128. The cubic root of 1488978990 is about 1141.9038132995.

The spelling of 1488978990 in words is "one billion, four hundred eighty-eight million, nine hundred seventy-eight thousand, nine hundred ninety".