1928492457 has 16 divisors (see below), whose sum is σ = 2707618560. Its totient is φ = 1217562192.

The previous prime is 1928492437. The next prime is 1928492471. The reversal of 1928492457 is 7542948291.

It is not a de Polignac number, because 1928492457 - 2⁷ = 1928492329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1928492407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251758 + ... + 259304.

It is an arithmetic number, because the mean of its divisors is an integer number (169226160).

Almost surely, 2^1928492457 is an apocalyptic number.

It is an amenable number.

1928492457 is a deficient number, since it is larger than the sum of its proper divisors (779126103).

1928492457 is a wasteful number, since it uses less digits than its factorization.

1928492457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12052.

The product of its digits is 1451520, while the sum is 51.

The square root of 1928492457 is about 43914.6041425856. The cubic root of 1928492457 is about 1244.7228098568.

The spelling of 1928492457 in words is "one billion, nine hundred twenty-eight million, four hundred ninety-two thousand, four hundred fifty-seven".