1655020444 has 24 divisors (see below), whose sum is σ = 3610954368. Its totient is φ = 644813040.

The previous prime is 1655020429. The next prime is 1655020469. The reversal of 1655020444 is 4440205561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2686414 + ... + 2687029.

It is an arithmetic number, because the mean of its divisors is an integer number (150456432).

Almost surely, 2^1655020444 is an apocalyptic number.

1655020444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1655020444 is an abundant number, since it is smaller than the sum of its proper divisors (1955933924).

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

1655020444 is a wasteful number, since it uses less digits than its factorization.

1655020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373465 (or 5373463 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1655020444 is about 40681.9424806633. The cubic root of 1655020444 is about 1182.8630191472.

The spelling of 1655020444 in words is "one billion, six hundred fifty-five million, twenty thousand, four hundred forty-four".