1973072518 has 16 divisors (see below), whose sum is σ = 3116520000. Its totient is φ = 934270632.

The previous prime is 1973072489. The next prime is 1973072533. The reversal of 1973072518 is 8152703791.

It is a super-2 number, since 2×1973072518² = 7786030322573720648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117493 + ... + 133231.

It is an arithmetic number, because the mean of its divisors is an integer number (194782500).

Almost surely, 2^1973072518 is an apocalyptic number.

1973072518 is a deficient number, since it is larger than the sum of its proper divisors (1143447482).

1973072518 is a wasteful number, since it uses less digits than its factorization.

1973072518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1973072518 is about 44419.2809261924. The cubic root of 1973072518 is about 1254.2410649277.

The spelling of 1973072518 in words is "one billion, nine hundred seventy-three million, seventy-two thousand, five hundred eighteen".