1987231941 has 16 divisors (see below), whose sum is σ = 2962115520. Its totient is φ = 1316690640.

The previous prime is 1987231913. The next prime is 1987231951. The reversal of 1987231941 is 1491327891.

It is a de Polignac number, because none of the positive numbers 2^k-1987231941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987231951) 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, 221370 + ... + 230171.

It is an arithmetic number, because the mean of its divisors is an integer number (185132220).

Almost surely, 2^1987231941 is an apocalyptic number.

It is an amenable number.

1987231941 is a deficient number, since it is larger than the sum of its proper divisors (974883579).

1987231941 is a wasteful number, since it uses less digits than its factorization.

1987231941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451713 (or 451707 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1987231941 is about 44578.3797484835. The cubic root of 1987231941 is about 1257.2341997304.

The spelling of 1987231941 in words is "one billion, nine hundred eighty-seven million, two hundred thirty-one thousand, nine hundred forty-one".