1370312640 has 280 divisors, whose sum is σ = 5045293440. Its totient is φ = 352622592.

The previous prime is 1370312639. The next prime is 1370312641. The reversal of 1370312640 is 462130731.

1370312640 is a `hidden beast` number, since 1 + 3 + 7 + 0 + 3 + 12 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (1370312639) and next prime (1370312641).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370312641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 750769 + ... + 752591.

Almost surely, 2^1370312640 is an apocalyptic number.

1370312640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1370312640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2522646720).

1370312640 is an abundant number, since it is smaller than the sum of its proper divisors (3674980800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1370312640 is a wasteful number, since it uses less digits than its factorization.

1370312640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1370312640 is about 37017.7341283877. The cubic root of 1370312640 is about 1110.7250193961.

The spelling of 1370312640 in words is "one billion, three hundred seventy million, three hundred twelve thousand, six hundred forty".