1492691863 has 4 divisors (see below), whose sum is σ = 1607514328. Its totient is φ = 1377869400.

The previous prime is 1492691839. The next prime is 1492691867. The reversal of 1492691863 is 3681962941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1492691863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1492691867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57411213 + ... + 57411238.

It is an arithmetic number, because the mean of its divisors is an integer number (401878582).

Almost surely, 2^1492691863 is an apocalyptic number.

1492691863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1492691863 is a deficient number, since it is larger than the sum of its proper divisors (114822465).

1492691863 is a wasteful number, since it uses less digits than its factorization.

1492691863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114822464.

The product of its digits is 559872, while the sum is 49.

The square root of 1492691863 is about 38635.3706207149. The cubic root of 1492691863 is about 1142.8521644195.

The spelling of 1492691863 in words is "one billion, four hundred ninety-two million, six hundred ninety-one thousand, eight hundred sixty-three".