1550897430 has 32 divisors (see below), whose sum is σ = 3723383808. Its totient is φ = 413436000.

The previous prime is 1550897417. The next prime is 1550897473. The reversal of 1550897430 is 347980551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111355 + ... + 124505.

It is an arithmetic number, because the mean of its divisors is an integer number (116355744).

Almost surely, 2^1550897430 is an apocalyptic number.

1550897430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550897430 is an abundant number, since it is smaller than the sum of its proper divisors (2172486378).

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

1550897430 is a wasteful number, since it uses less digits than its factorization.

1550897430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17092.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1550897430 is about 39381.4350932010. The cubic root of 1550897430 is about 1157.5178370368.

The spelling of 1550897430 in words is "one billion, five hundred fifty million, eight hundred ninety-seven thousand, four hundred thirty".