1513278923 has 8 divisors (see below), whose sum is σ = 1633211328. Its totient is φ = 1393850304.

The previous prime is 1513278913. The next prime is 1513278931. The reversal of 1513278923 is 3298723151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1513278923 - 2¹⁴ = 1513262539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513278913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119690 + ... + 131727.

It is an arithmetic number, because the mean of its divisors is an integer number (204151416).

Almost surely, 2^1513278923 is an apocalyptic number.

1513278923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1513278923 is a deficient number, since it is larger than the sum of its proper divisors (119932405).

1513278923 is a wasteful number, since it uses less digits than its factorization.

1513278923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251893.

The product of its digits is 90720, while the sum is 41.

The square root of 1513278923 is about 38900.8858896555. The cubic root of 1513278923 is about 1148.0822284761.

The spelling of 1513278923 in words is "one billion, five hundred thirteen million, two hundred seventy-eight thousand, nine hundred twenty-three".