1959220044 has 36 divisors (see below), whose sum is σ = 4963120344. Its totient is φ = 651669312.

The previous prime is 1959220013. The next prime is 1959220049. The reversal of 1959220044 is 4400229591.

1959220044 is a `hidden beast` number, since 1 + 9 + 592 + 20 + 0 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1959220044² = 7677086361622723872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1959219990 and 1959220008.

It is not an unprimeable number, because it can be changed into a prime (1959220049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41457 + ... + 75080.

It is an arithmetic number, because the mean of its divisors is an integer number (137864454).

Almost surely, 2^1959220044 is an apocalyptic number.

It is an amenable number.

1959220044 is an abundant number, since it is smaller than the sum of its proper divisors (3003900300).

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

1959220044 is a wasteful number, since it uses less digits than its factorization.

1959220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117014 (or 117009 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1959220044 is about 44263.0776607321. The cubic root of 1959220044 is about 1251.2989258192.

The spelling of 1959220044 in words is "one billion, nine hundred fifty-nine million, two hundred twenty thousand, forty-four".