1492978945 has 8 divisors (see below), whose sum is σ = 1792137600. Its totient is φ = 1194007920.

The previous prime is 1492978943. The next prime is 1492978969. The reversal of 1492978945 is 5498792941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1492978945 - 2¹ = 1492978943 is a prime.

It is a super-2 number, since 2×1492978945² = 4457972260426626050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1492978945.

It is not an unprimeable number, because it can be changed into a prime (1492978943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28761 + ... + 61750.

It is an arithmetic number, because the mean of its divisors is an integer number (224017200).

Almost surely, 2^1492978945 is an apocalyptic number.

It is an amenable number.

1492978945 is a deficient number, since it is larger than the sum of its proper divisors (299158655).

1492978945 is an equidigital number, since it uses as much as digits as its factorization.

1492978945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93815.

The product of its digits is 6531840, while the sum is 58.

The square root of 1492978945 is about 38639.0857164090. The cubic root of 1492978945 is about 1142.9254260801.

The spelling of 1492978945 in words is "one billion, four hundred ninety-two million, nine hundred seventy-eight thousand, nine hundred forty-five".