1550156090 has 16 divisors (see below), whose sum is σ = 3188892672. Its totient is φ = 531482064.

The previous prime is 1550156087. The next prime is 1550156099. The reversal of 1550156090 is 906510551.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1550156099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11072474 + ... + 11072613.

It is an arithmetic number, because the mean of its divisors is an integer number (199305792).

Almost surely, 2^1550156090 is an apocalyptic number.

1550156090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550156090 is an abundant number, since it is smaller than the sum of its proper divisors (1638736582).

1550156090 is a wasteful number, since it uses less digits than its factorization.

1550156090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22145101.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 1550156090 is about 39372.0216651368. The cubic root of 1550156090 is about 1157.3333737230. Note that the first 4 decimals are identical.

The spelling of 1550156090 in words is "one billion, five hundred fifty million, one hundred fifty-six thousand, ninety".