1345680237 has 24 divisors (see below), whose sum is σ = 2079279072. Its totient is φ = 767584000.

The previous prime is 1345680221. The next prime is 1345680283. The reversal of 1345680237 is 7320865431.

It is not a de Polignac number, because 1345680237 - 2⁴ = 1345680221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345680195 and 1345680204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345680137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61014 + ... + 80087.

It is an arithmetic number, because the mean of its divisors is an integer number (86636628).

Almost surely, 2^1345680237 is an apocalyptic number.

1345680237 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1345680237 is a deficient number, since it is larger than the sum of its proper divisors (733598835).

1345680237 is a wasteful number, since it uses less digits than its factorization.

1345680237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141149 (or 141132 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 1345680237 is about 36683.5145126527. The cubic root of 1345680237 is about 1104.0293646031.

The spelling of 1345680237 in words is "one billion, three hundred forty-five million, six hundred eighty thousand, two hundred thirty-seven".