1397127500 has 60 divisors (see below), whose sum is σ = 3076302768. Its totient is φ = 555000000.

The previous prime is 1397127467. The next prime is 1397127533. The reversal of 1397127500 is 57217931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1397127467) and next prime (1397127533).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 375650 + ... + 379350.

Almost surely, 2^1397127500 is an apocalyptic number.

1397127500 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 1397127500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538151384).

1397127500 is an abundant number, since it is smaller than the sum of its proper divisors (1679175268).

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

1397127500 is a wasteful number, since it uses less digits than its factorization.

1397127500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3859 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 1397127500 is about 37378.1687619926. The cubic root of 1397127500 is about 1117.9233148780.

The spelling of 1397127500 in words is "one billion, three hundred ninety-seven million, one hundred twenty-seven thousand, five hundred".