1988902970 has 8 divisors (see below), whose sum is σ = 3580025364. Its totient is φ = 795561184.

The previous prime is 1988902967. The next prime is 1988902997. The reversal of 1988902970 is 792098891.

It can be written as a sum of positive squares in 2 ways, for example, as 1978203529 + 10699441 = 44477^2 + 3271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99445139 + ... + 99445158.

Almost surely, 2^1988902970 is an apocalyptic number.

1988902970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988902970 is a deficient number, since it is larger than the sum of its proper divisors (1591122394).

1988902970 is a wasteful number, since it uses less digits than its factorization.

1988902970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198890304.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 1988902970 is about 44597.1184046683. The cubic root of 1988902970 is about 1257.5864965067.

The spelling of 1988902970 in words is "one billion, nine hundred eighty-eight million, nine hundred two thousand, nine hundred seventy".