1345143645 has 32 divisors (see below), whose sum is σ = 2406076800. Its totient is φ = 712996992.

The previous prime is 1345143643. The next prime is 1345143671. The reversal of 1345143645 is 5463415431.

1345143645 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 1 + 4 + 3 + 645 = 666.

It is not a de Polignac number, because 1345143645 - 2¹ = 1345143643 is a prime.

It is a super-2 number, since 2×1345143645² = 3618822851367772050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345143643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8560 + ... + 52569.

It is an arithmetic number, because the mean of its divisors is an integer number (75189900).

Almost surely, 2^1345143645 is an apocalyptic number.

1345143645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345143645 is a deficient number, since it is larger than the sum of its proper divisors (1060933155).

1345143645 is a wasteful number, since it uses less digits than its factorization.

1345143645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61306 (or 61300 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1345143645 is about 36676.1999803687. The cubic root of 1345143645 is about 1103.8826006424.

The spelling of 1345143645 in words is "one billion, three hundred forty-five million, one hundred forty-three thousand, six hundred forty-five".