1538153940 has 48 divisors (see below), whose sum is σ = 4367502720. Its totient is φ = 404396160.

The previous prime is 1538153933. The next prime is 1538153977. The reversal of 1538153940 is 493518351.

1538153940 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176275 + ... + 184794.

It is an arithmetic number, because the mean of its divisors is an integer number (90989640).

Almost surely, 2^1538153940 is an apocalyptic number.

1538153940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538153940 is an abundant number, since it is smaller than the sum of its proper divisors (2829348780).

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

1538153940 is a wasteful number, since it uses less digits than its factorization.

1538153940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361152 (or 361150 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1538153940 is about 39219.3057052263. The cubic root of 1538153940 is about 1154.3387305644.

The spelling of 1538153940 in words is "one billion, five hundred thirty-eight million, one hundred fifty-three thousand, nine hundred forty".