1550444164 has 12 divisors (see below), whose sum is σ = 2713554844. Its totient is φ = 775142784.

The previous prime is 1550444117. The next prime is 1550444167. The reversal of 1550444164 is 4614440551.

It can be written as a sum of positive squares in 2 ways, for example, as 32718400 + 1517725764 = 5720^2 + 38958^2 .

It is not an unprimeable number, because it can be changed into a prime (1550444167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58912 + ... + 81064.

Almost surely, 2^1550444164 is an apocalyptic number.

It is an amenable number.

1550444164 is a deficient number, since it is larger than the sum of its proper divisors (1163110680).

1550444164 is a wasteful number, since it uses less digits than its factorization.

1550444164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39654 (or 39652 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 1550444164 is about 39375.6798544482. The cubic root of 1550444164 is about 1157.4050604833.

The spelling of 1550444164 in words is "one billion, five hundred fifty million, four hundred forty-four thousand, one hundred sixty-four".