1977362493 has 8 divisors (see below), whose sum is σ = 2651723808. Its totient is φ = 1310621424.

The previous prime is 1977362489. The next prime is 1977362501. The reversal of 1977362493 is 3942637791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1977362493 - 2² = 1977362489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977360493) by changing a digit.

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, 1904455 + ... + 1905492.

It is an arithmetic number, because the mean of its divisors is an integer number (331465476).

Almost surely, 2^1977362493 is an apocalyptic number.

It is an amenable number.

1977362493 is a deficient number, since it is larger than the sum of its proper divisors (674361315).

1977362493 is a wasteful number, since it uses less digits than its factorization.

1977362493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810123.

The product of its digits is 1714608, while the sum is 51.

The square root of 1977362493 is about 44467.5442654528. The cubic root of 1977362493 is about 1255.1494227996.

The spelling of 1977362493 in words is "one billion, nine hundred seventy-seven million, three hundred sixty-two thousand, four hundred ninety-three".