1550432994 has 16 divisors (see below), whose sum is σ = 3382763040. Its totient is φ = 469828160.

The previous prime is 1550432993. The next prime is 1550433011. The reversal of 1550432994 is 4992340551.

It is not an unprimeable number, because it can be changed into a prime (1550432993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11745639 + ... + 11745770.

It is an arithmetic number, because the mean of its divisors is an integer number (211422690).

Almost surely, 2^1550432994 is an apocalyptic number.

1550432994 is an abundant number, since it is smaller than the sum of its proper divisors (1832330046).

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

1550432994 is a wasteful number, since it uses less digits than its factorization.

1550432994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23491425.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1550432994 is about 39375.5380153719. The cubic root of 1550432994 is about 1157.4022810119.

The spelling of 1550432994 in words is "one billion, five hundred fifty million, four hundred thirty-two thousand, nine hundred ninety-four".