1987372192 has 48 divisors (see below), whose sum is σ = 4282741512. Its totient is φ = 902200320.

The previous prime is 1987372187. The next prime is 1987372193. The reversal of 1987372192 is 2912737891.

It can be written as a sum of positive squares in 4 ways, for example, as 795465616 + 1191906576 = 28204^2 + 34524^2 .

It is not an unprimeable number, because it can be changed into a prime (1987372193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13783 + ... + 64534.

Almost surely, 2^1987372192 is an apocalyptic number.

It is an amenable number.

1987372192 is an abundant number, since it is smaller than the sum of its proper divisors (2295369320).

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

1987372192 is a wasteful number, since it uses less digits than its factorization.

1987372192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78401 (or 78393 counting only the distinct ones).

The product of its digits is 381024, while the sum is 49.

The square root of 1987372192 is about 44579.9528039230. The cubic root of 1987372192 is about 1257.2637759133.

The spelling of 1987372192 in words is "one billion, nine hundred eighty-seven million, three hundred seventy-two thousand, one hundred ninety-two".