1987338122 has 24 divisors (see below), whose sum is σ = 3744739488. Its totient is φ = 774286920.

The previous prime is 1987338103. The next prime is 1987338163. The reversal of 1987338122 is 2218337891.

It is a super-2 number, since 2×1987338122² = 7899025622308973768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 584888 + ... + 588275.

It is an arithmetic number, because the mean of its divisors is an integer number (156030812).

Almost surely, 2^1987338122 is an apocalyptic number.

1987338122 is a deficient number, since it is larger than the sum of its proper divisors (1757401366).

1987338122 is a wasteful number, since it uses less digits than its factorization.

1987338122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173194 (or 1173183 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 1987338122 is about 44579.5706798529. The cubic root of 1987338122 is about 1257.2565913470.

The spelling of 1987338122 in words is "one billion, nine hundred eighty-seven million, three hundred thirty-eight thousand, one hundred twenty-two".