1538463091 has 12 divisors (see below), whose sum is σ = 1692371800. Its totient is φ = 1397499840.

The previous prime is 1538463067. The next prime is 1538463097. The reversal of 1538463091 is 1903648351.

It is not a de Polignac number, because 1538463091 - 2⁹ = 1538462579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1538463097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175900 + ... + 184438.

Almost surely, 2^1538463091 is an apocalyptic number.

1538463091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1538463091 is a deficient number, since it is larger than the sum of its proper divisors (153908709).

1538463091 is a wasteful number, since it uses less digits than its factorization.

1538463091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050 (or 10039 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1538463091 is about 39223.2468186916. The cubic root of 1538463091 is about 1154.4160615904.

The spelling of 1538463091 in words is "one billion, five hundred thirty-eight million, four hundred sixty-three thousand, ninety-one".