1497812638 has 16 divisors (see below), whose sum is σ = 2622311424. Its totient is φ = 628261560.

The previous prime is 1497812621. The next prime is 1497812653. The reversal of 1497812638 is 8362187941.

It is a junction number, because it is equal to n+sod(n) for n = 1497812591 and 1497812600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137498 + ... + 1138813.

It is an arithmetic number, because the mean of its divisors is an integer number (163894464).

Almost surely, 2^1497812638 is an apocalyptic number.

1497812638 is a deficient number, since it is larger than the sum of its proper divisors (1124498786).

1497812638 is a wasteful number, since it uses less digits than its factorization.

1497812638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276367.

The product of its digits is 580608, while the sum is 49.

The square root of 1497812638 is about 38701.5844378496. The cubic root of 1497812638 is about 1144.1575486598.

The spelling of 1497812638 in words is "one billion, four hundred ninety-seven million, eight hundred twelve thousand, six hundred thirty-eight".