1457997782 has 8 divisors (see below), whose sum is σ = 2192956896. Its totient is φ = 727012152.

The previous prime is 1457997769. The next prime is 1457997791. The reversal of 1457997782 is 2877997541.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992453 + ... + 993920.

It is an arithmetic number, because the mean of its divisors is an integer number (274119612).

Almost surely, 2^1457997782 is an apocalyptic number.

1457997782 is a deficient number, since it is larger than the sum of its proper divisors (734959114).

1457997782 is a wasteful number, since it uses less digits than its factorization.

1457997782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986742.

The product of its digits is 8890560, while the sum is 59.

The square root of 1457997782 is about 38183.7371403062. The cubic root of 1457997782 is about 1133.9283699041.

The spelling of 1457997782 in words is "one billion, four hundred fifty-seven million, nine hundred ninety-seven thousand, seven hundred eighty-two".