1955820364 has 12 divisors (see below), whose sum is σ = 3571498224. Its totient is φ = 935392304.

The previous prime is 1955820343. The next prime is 1955820371. The reversal of 1955820364 is 4630285591.

It is a self number, because there is not a number n which added to its sum of digits gives 1955820364.

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, 10629367 + ... + 10629550.

It is an arithmetic number, because the mean of its divisors is an integer number (297624852).

Almost surely, 2^1955820364 is an apocalyptic number.

It is an amenable number.

1955820364 is a deficient number, since it is larger than the sum of its proper divisors (1615677860).

1955820364 is a wasteful number, since it uses less digits than its factorization.

1955820364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21258944 (or 21258942 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 1955820364 is about 44224.6578731820. The cubic root of 1955820364 is about 1250.5747466792.

The spelling of 1955820364 in words is "one billion, nine hundred fifty-five million, eight hundred twenty thousand, three hundred sixty-four".