1371253660 has 96 divisors (see below), whose sum is σ = 3565900800. Its totient is φ = 432165888.

The previous prime is 1371253649. The next prime is 1371253679. The reversal of 1371253660 is 663521731.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95641 + ... + 109039.

It is an arithmetic number, because the mean of its divisors is an integer number (37144800).

Almost surely, 2^1371253660 is an apocalyptic number.

1371253660 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 1371253660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782950400).

1371253660 is an abundant number, since it is smaller than the sum of its proper divisors (2194647140).

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

1371253660 is a wasteful number, since it uses less digits than its factorization.

1371253660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13475 (or 13473 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 1371253660 is about 37030.4423414034. The cubic root of 1371253660 is about 1110.9792132840.

The spelling of 1371253660 in words is "one billion, three hundred seventy-one million, two hundred fifty-three thousand, six hundred sixty".