1987537522 has 16 divisors (see below), whose sum is σ = 3159288000. Its totient is φ = 935143920.

The previous prime is 1987537483. The next prime is 1987537567. The reversal of 1987537522 is 2257357891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169854 + ... + 181177.

It is an arithmetic number, because the mean of its divisors is an integer number (197455500).

Almost surely, 2^1987537522 is an apocalyptic number.

1987537522 is a deficient number, since it is larger than the sum of its proper divisors (1171750478).

1987537522 is a wasteful number, since it uses less digits than its factorization.

1987537522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351201.

The product of its digits is 1058400, while the sum is 49.

The square root of 1987537522 is about 44581.8070741867. The cubic root of 1987537522 is about 1257.2986389780.

The spelling of 1987537522 in words is "one billion, nine hundred eighty-seven million, five hundred thirty-seven thousand, five hundred twenty-two".