1358991023 has 12 divisors (see below), whose sum is σ = 1472747400. Its totient is φ = 1253450016.

The previous prime is 1358990957. The next prime is 1358991037. The reversal of 1358991023 is 3201998531.

It is not a de Polignac number, because 1358991023 - 2¹² = 1358986927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1358901023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284765 + ... + 289497.

It is an arithmetic number, because the mean of its divisors is an integer number (122728950).

Almost surely, 2^1358991023 is an apocalyptic number.

1358991023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1358991023 is a deficient number, since it is larger than the sum of its proper divisors (113756377).

1358991023 is a wasteful number, since it uses less digits than its factorization.

1358991023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458 (or 6445 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1358991023 is about 36864.4954258159. The cubic root of 1358991023 is about 1107.6575939693.

The spelling of 1358991023 in words is "one billion, three hundred fifty-eight million, nine hundred ninety-one thousand, twenty-three".