1370998765 has 8 divisors (see below), whose sum is σ = 1667735928. Its totient is φ = 1081774080.

The previous prime is 1370998747. The next prime is 1370998771. The reversal of 1370998765 is 5678990731.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 1370998729 = 6^2 + 37027^2 .

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

It is not a de Polignac number, because 1370998765 - 2⁹ = 1370998253 is a prime.

It is a super-2 number, since 2×1370998765² = 3759275227263050450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877716 + ... + 1878445.

It is an arithmetic number, because the mean of its divisors is an integer number (208466991).

Almost surely, 2^1370998765 is an apocalyptic number.

It is an amenable number.

1370998765 is a deficient number, since it is larger than the sum of its proper divisors (296737163).

1370998765 is an equidigital number, since it uses as much as digits as its factorization.

1370998765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756239.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 1370998765 is about 37027.0004861317. Note that the first 3 decimals coincide. The cubic root of 1370998765 is about 1110.9103710260.

The spelling of 1370998765 in words is "one billion, three hundred seventy million, nine hundred ninety-eight thousand, seven hundred sixty-five".