1973377797 has 12 divisors (see below), whose sum is σ = 2658613536. Its totient is φ = 1302003840.

The previous prime is 1973377789. The next prime is 1973377807. The reversal of 1973377797 is 7977733791.

It is not a de Polignac number, because 1973377797 - 2³ = 1973377789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1973377797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973377727) 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, 6729 + ... + 63182.

It is an arithmetic number, because the mean of its divisors is an integer number (221551128).

Almost surely, 2^1973377797 is an apocalyptic number.

It is an amenable number.

1973377797 is a deficient number, since it is larger than the sum of its proper divisors (685235739).

1973377797 is an frugal number, since it uses more digits than its factorization.

1973377797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70108 (or 70011 counting only the distinct ones).

The product of its digits is 12252303, while the sum is 60.

The square root of 1973377797 is about 44422.7171276139. The cubic root of 1973377797 is about 1254.3057480904.

The spelling of 1973377797 in words is "one billion, nine hundred seventy-three million, three hundred seventy-seven thousand, seven hundred ninety-seven".