1423637973 has 12 divisors (see below), whose sum is σ = 2057598400. Its totient is φ = 948523176.

The previous prime is 1423637939. The next prime is 1423637977. The reversal of 1423637973 is 3797363241.

It is a happy number.

1423637973 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 637 + 9 + 7 + 3 = 666.

It is not a de Polignac number, because 1423637973 - 2¹² = 1423633877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423637977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31261 + ... + 61842.

Almost surely, 2^1423637973 is an apocalyptic number.

It is an amenable number.

1423637973 is a deficient number, since it is larger than the sum of its proper divisors (633960427).

1423637973 is a wasteful number, since it uses less digits than its factorization.

1423637973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94808 (or 94805 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 1423637973 is about 37731.1273751527. The cubic root of 1423637973 is about 1124.9499165852.

The spelling of 1423637973 in words is "one billion, four hundred twenty-three million, six hundred thirty-seven thousand, nine hundred seventy-three".