1345423651 has 48 divisors (see below), whose sum is σ = 1684680480. Its totient is φ = 1057996800.

The previous prime is 1345423633. The next prime is 1345423693. The reversal of 1345423651 is 1563245431.

It is not a de Polignac number, because 1345423651 - 2¹³ = 1345415459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345423621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6971011 + ... + 6971203.

It is an arithmetic number, because the mean of its divisors is an integer number (35097510).

Almost surely, 2^1345423651 is an apocalyptic number.

1345423651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1345423651 is a deficient number, since it is larger than the sum of its proper divisors (339256829).

1345423651 is a wasteful number, since it uses less digits than its factorization.

1345423651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 287 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 1345423651 is about 36680.0170528859. The cubic root of 1345423651 is about 1103.9591903082.

The spelling of 1345423651 in words is "one billion, three hundred forty-five million, four hundred twenty-three thousand, six hundred fifty-one".