1345137887 has 8 divisors (see below), whose sum is σ = 1349321040. Its totient is φ = 1340962560.

The previous prime is 1345137883. The next prime is 1345137919. The reversal of 1345137887 is 7887315431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345137887 - 2² = 1345137883 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 (1345137883) 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, 556712 + ... + 559122.

It is an arithmetic number, because the mean of its divisors is an integer number (168665130).

Almost surely, 2^1345137887 is an apocalyptic number.

1345137887 is a deficient number, since it is larger than the sum of its proper divisors (4183153).

1345137887 is an equidigital number, since it uses as much as digits as its factorization.

1345137887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913.

The product of its digits is 564480, while the sum is 47.

The square root of 1345137887 is about 36676.1214825123. The cubic root of 1345137887 is about 1103.8810255528.

The spelling of 1345137887 in words is "one billion, three hundred forty-five million, one hundred thirty-seven thousand, eight hundred eighty-seven".