1345478837 has 8 divisors (see below), whose sum is σ = 1381266432. Its totient is φ = 1309832800.

The previous prime is 1345478831. The next prime is 1345478839. The reversal of 1345478837 is 7388745431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345478837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345478831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15989 + ... + 54282.

It is an arithmetic number, because the mean of its divisors is an integer number (172658304).

Almost surely, 2^1345478837 is an apocalyptic number.

It is an amenable number.

1345478837 is a deficient number, since it is larger than the sum of its proper divisors (35787595).

1345478837 is an equidigital number, since it uses as much as digits as its factorization.

1345478837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70779.

The product of its digits is 2257920, while the sum is 50.

The square root of 1345478837 is about 36680.7693076358. The cubic root of 1345478837 is about 1103.9742840073.

The spelling of 1345478837 in words is "one billion, three hundred forty-five million, four hundred seventy-eight thousand, eight hundred thirty-seven".