1492157939 has 4 divisors (see below), whose sum is σ = 1513174320. Its totient is φ = 1471141560.

The previous prime is 1492157923. The next prime is 1492157957. The reversal of 1492157939 is 9397512941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9397512941 = 181 ⋅51919961.

It is a cyclic number.

It is not a de Polignac number, because 1492157939 - 2⁴ = 1492157923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492157839) 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, 10508084 + ... + 10508225.

It is an arithmetic number, because the mean of its divisors is an integer number (378293580).

Almost surely, 2^1492157939 is an apocalyptic number.

1492157939 is a deficient number, since it is larger than the sum of its proper divisors (21016381).

1492157939 is an equidigital number, since it uses as much as digits as its factorization.

1492157939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21016380.

The product of its digits is 612360, while the sum is 50.

The square root of 1492157939 is about 38628.4602204126. The cubic root of 1492157939 is about 1142.7158851282.

The spelling of 1492157939 in words is "one billion, four hundred ninety-two million, one hundred fifty-seven thousand, nine hundred thirty-nine".