1655901642 has 64 divisors (see below), whose sum is σ = 3615805440. Its totient is φ = 503625600.

The previous prime is 1655901619. The next prime is 1655901671. The reversal of 1655901642 is 2461095561.

It is a self number, because there is not a number n which added to its sum of digits gives 1655901642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 822417 + ... + 824427.

It is an arithmetic number, because the mean of its divisors is an integer number (56496960).

Almost surely, 2^1655901642 is an apocalyptic number.

1655901642 is an abundant number, since it is smaller than the sum of its proper divisors (1959903798).

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

1655901642 is a wasteful number, since it uses less digits than its factorization.

1655901642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1655901642 is about 40692.7713728126. The cubic root of 1655901642 is about 1183.0729161693.

The spelling of 1655901642 in words is "one billion, six hundred fifty-five million, nine hundred one thousand, six hundred forty-two".