1492020387 has 90 divisors (see below), whose sum is σ = 2605338060. Its totient is φ = 822238560.

The previous prime is 1492020377. The next prime is 1492020389. The reversal of 1492020387 is 7830202941.

It is not a de Polignac number, because 1492020387 - 2⁴ = 1492020371 is a prime.

It is a super-2 number, since 2×1492020387² = 4452249670447259538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1492020389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 22268928 + ... + 22268994.

Almost surely, 2^1492020387 is an apocalyptic number.

1492020387 is a deficient number, since it is larger than the sum of its proper divisors (1113317673).

1492020387 is an equidigital number, since it uses as much as digits as its factorization.

1492020387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1492020387 is about 38626.6797304661. The cubic root of 1492020387 is about 1142.6807709531.

The spelling of 1492020387 in words is "one billion, four hundred ninety-two million, twenty thousand, three hundred eighty-seven".