1351876993 has 4 divisors (see below), whose sum is σ = 1368989440. Its totient is φ = 1334764548.

The previous prime is 1351876921. The next prime is 1351877011. The reversal of 1351876993 is 3996781531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3996781531 = 1951 ⋅2048581.

It is a cyclic number.

It is not a de Polignac number, because 1351876993 - 2²¹ = 1349779841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1351876993.

It is not an unprimeable number, because it can be changed into a prime (1351876913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8556105 + ... + 8556262.

It is an arithmetic number, because the mean of its divisors is an integer number (342247360).

Almost surely, 2^1351876993 is an apocalyptic number.

It is an amenable number.

1351876993 is a deficient number, since it is larger than the sum of its proper divisors (17112447).

1351876993 is an equidigital number, since it uses as much as digits as its factorization.

1351876993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17112446.

The product of its digits is 1224720, while the sum is 52.

The square root of 1351876993 is about 36767.8799089640. The cubic root of 1351876993 is about 1105.7214273004.

The spelling of 1351876993 in words is "one billion, three hundred fifty-one million, eight hundred seventy-six thousand, nine hundred ninety-three".