1506538990 has 64 divisors (see below), whose sum is σ = 3061255680. Its totient is φ = 528992640.

The previous prime is 1506538967. The next prime is 1506538991. The reversal of 1506538990 is 998356051.

It is a self number, because there is not a number n which added to its sum of digits gives 1506538990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1506538991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564399 + ... + 567061.

It is an arithmetic number, because the mean of its divisors is an integer number (47832120).

Almost surely, 2^1506538990 is an apocalyptic number.

1506538990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1506538990 is an abundant number, since it is smaller than the sum of its proper divisors (1554716690).

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

1506538990 is a wasteful number, since it uses less digits than its factorization.

1506538990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 1506538990 is about 38814.1596585576. The cubic root of 1506538990 is about 1146.3752257381.

The spelling of 1506538990 in words is "one billion, five hundred six million, five hundred thirty-eight thousand, nine hundred ninety".