1418929649 has 4 divisors (see below), whose sum is σ = 1422995700. Its totient is φ = 1414863600.

The previous prime is 1418929643. The next prime is 1418929651. The reversal of 1418929649 is 9469298141.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1288810000 + 130119649 = 35900^2 + 11407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1418929649 is a prime.

It is a super-2 number, since 2×1418929649² = 4026722697622526402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1418929649.

It is not an unprimeable number, because it can be changed into a prime (1418929643) 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, 2032502 + ... + 2033199.

It is an arithmetic number, because the mean of its divisors is an integer number (355748925).

Almost surely, 2^1418929649 is an apocalyptic number.

It is an amenable number.

1418929649 is a deficient number, since it is larger than the sum of its proper divisors (4066051).

1418929649 is an equidigital number, since it uses as much as digits as its factorization.

1418929649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066050.

The product of its digits is 1119744, while the sum is 53.

The square root of 1418929649 is about 37668.6826023953. The cubic root of 1418929649 is about 1123.7083840626.

The spelling of 1418929649 in words is "one billion, four hundred eighteen million, nine hundred twenty-nine thousand, six hundred forty-nine".