1345187870 has 32 divisors (see below), whose sum is σ = 2612500128. Its totient is φ = 495750528.

The previous prime is 1345187869. The next prime is 1345187887. The reversal of 1345187870 is 787815431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61652 + ... + 80568.

It is an arithmetic number, because the mean of its divisors is an integer number (81640629).

Almost surely, 2^1345187870 is an apocalyptic number.

1345187870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1345187870 is a deficient number, since it is larger than the sum of its proper divisors (1267312258).

1345187870 is a wasteful number, since it uses less digits than its factorization.

1345187870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19484.

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 1345187870 is about 36676.8028868384. The cubic root of 1345187870 is about 1103.8946981541.

The spelling of 1345187870 in words is "one billion, three hundred forty-five million, one hundred eighty-seven thousand, eight hundred seventy".