1345213651 has 4 divisors (see below), whose sum is σ = 1350842400. Its totient is φ = 1339584904.

The previous prime is 1345213613. The next prime is 1345213669. The reversal of 1345213651 is 1563125431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1345213651 - 2⁹ = 1345213139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345213601) 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, 2814016 + ... + 2814493.

It is an arithmetic number, because the mean of its divisors is an integer number (337710600).

Almost surely, 2^1345213651 is an apocalyptic number.

1345213651 is a deficient number, since it is larger than the sum of its proper divisors (5628749).

1345213651 is an equidigital number, since it uses as much as digits as its factorization.

1345213651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628748.

The product of its digits is 10800, while the sum is 31.

The square root of 1345213651 is about 36677.1543470864. The cubic root of 1345213651 is about 1103.9017502861.

The spelling of 1345213651 in words is "one billion, three hundred forty-five million, two hundred thirteen thousand, six hundred fifty-one".