1345746772 has 12 divisors (see below), whose sum is σ = 2412497556. Its totient is φ = 656461760.

The previous prime is 1345746749. The next prime is 1345746781. The reversal of 1345746772 is 2776475431.

It can be written as a sum of positive squares in 2 ways, for example, as 53056656 + 1292690116 = 7284^2 + 35954^2 .

It is a super-2 number, since 2×1345746772² = 3622068748696839968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4102723 + ... + 4103050.

It is an arithmetic number, because the mean of its divisors is an integer number (201041463).

Almost surely, 2^1345746772 is an apocalyptic number.

It is an amenable number.

1345746772 is a deficient number, since it is larger than the sum of its proper divisors (1066750784).

1345746772 is a wasteful number, since it uses less digits than its factorization.

1345746772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205818 (or 8205816 counting only the distinct ones).

The product of its digits is 987840, while the sum is 46.

The square root of 1345746772 is about 36684.4213801990. The cubic root of 1345746772 is about 1104.0475599566.

The spelling of 1345746772 in words is "one billion, three hundred forty-five million, seven hundred forty-six thousand, seven hundred seventy-two".