1574380649 has 2 divisors, whose sum is σ = 1574380650. Its totient is φ = 1574380648.

The previous prime is 1574380609. The next prime is 1574380697. The reversal of 1574380649 is 9460834751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1518505024 + 55875625 = 38968^2 + 7475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1574380649 is a prime.

It is a super-2 number, since 2×1574380649² = 4957348855891322402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1574380609) 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 as a sum of consecutive naturals, namely, 787190324 + 787190325.

It is an arithmetic number, because the mean of its divisors is an integer number (787190325).

Almost surely, 2^1574380649 is an apocalyptic number.

It is an amenable number.

1574380649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1574380649 is an equidigital number, since it uses as much as digits as its factorization.

1574380649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1574380649 is about 39678.4658095547. The cubic root of 1574380649 is about 1163.3308568204.

The spelling of 1574380649 in words is "one billion, five hundred seventy-four million, three hundred eighty thousand, six hundred forty-nine".