1642939516 has 12 divisors (see below), whose sum is σ = 2909785032. Its totient is φ = 811572368.

The previous prime is 1642939499. The next prime is 1642939549. The reversal of 1642939516 is 6159392461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2473975 + ... + 2474638.

It is an arithmetic number, because the mean of its divisors is an integer number (242482086).

Almost surely, 2^1642939516 is an apocalyptic number.

It is an amenable number.

1642939516 is a deficient number, since it is larger than the sum of its proper divisors (1266845516).

1642939516 is a wasteful number, since it uses less digits than its factorization.

1642939516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4948700 (or 4948698 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 1642939516 is about 40533.1903012827. The cubic root of 1642939516 is about 1179.9778593950.

It can be divided in two parts, 16429 and 39516, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 1642939516 in words is "one billion, six hundred forty-two million, nine hundred thirty-nine thousand, five hundred sixteen".