1492258987 has 4 divisors (see below), whose sum is σ = 1493455000. Its totient is φ = 1491062976.

The previous prime is 1492258981. The next prime is 1492259047. The reversal of 1492258987 is 7898522941.

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

It is a cyclic number.

It is not a de Polignac number, because 1492258987 - 2³ = 1492258979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492258981) 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, 596133 + ... + 598630.

It is an arithmetic number, because the mean of its divisors is an integer number (373363750).

Almost surely, 2^1492258987 is an apocalyptic number.

1492258987 is a deficient number, since it is larger than the sum of its proper divisors (1196013).

1492258987 is a wasteful number, since it uses less digits than its factorization.

1492258987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196012.

The product of its digits is 2903040, while the sum is 55.

The square root of 1492258987 is about 38629.7681458225. The cubic root of 1492258987 is about 1142.7416792137.

The spelling of 1492258987 in words is "one billion, four hundred ninety-two million, two hundred fifty-eight thousand, nine hundred eighty-seven".