1497128997 has 48 divisors (see below), whose sum is σ = 2632378560. Its totient is φ = 748113408.

The previous prime is 1497128993. The next prime is 1497129043. The reversal of 1497128997 is 7998217941.

It is not a de Polignac number, because 1497128997 - 2² = 1497128993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497128993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15693 + ... + 56925.

It is an arithmetic number, because the mean of its divisors is an integer number (54841220).

Almost surely, 2^1497128997 is an apocalyptic number.

It is an amenable number.

1497128997 is a deficient number, since it is larger than the sum of its proper divisors (1135249563).

1497128997 is a wasteful number, since it uses less digits than its factorization.

1497128997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41282 (or 41275 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 57.

The square root of 1497128997 is about 38692.7512203513. The cubic root of 1497128997 is about 1143.9834476573.

The spelling of 1497128997 in words is "one billion, four hundred ninety-seven million, one hundred twenty-eight thousand, nine hundred ninety-seven".