1492319851 has 4 divisors (see below), whose sum is σ = 1627985304. Its totient is φ = 1356654400.

The previous prime is 1492319821. The next prime is 1492319861. The reversal of 1492319851 is 1589132941.

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-1492319851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1492319798 and 1492319807.

It is not an unprimeable number, because it can be changed into a prime (1492319821) 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, 67832710 + ... + 67832731.

It is an arithmetic number, because the mean of its divisors is an integer number (406996326).

Almost surely, 2^1492319851 is an apocalyptic number.

1492319851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1492319851 is a deficient number, since it is larger than the sum of its proper divisors (135665453).

1492319851 is a wasteful number, since it uses less digits than its factorization.

1492319851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135665452.

The product of its digits is 77760, while the sum is 43.

The square root of 1492319851 is about 38630.5559240351. Note that the first 3 decimals coincide. The cubic root of 1492319851 is about 1142.7572151416.

The spelling of 1492319851 in words is "one billion, four hundred ninety-two million, three hundred nineteen thousand, eight hundred fifty-one".