1250113649 has 4 divisors (see below), whose sum is σ = 1323649764. Its totient is φ = 1176577536.

The previous prime is 1250113637. The next prime is 1250113679. The reversal of 1250113649 is 9463110521.

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 811965025 + 438148624 = 28495^2 + 20932^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250113649 - 2¹⁶ = 1250048113 is a prime.

It is a super-3 number, since 3×1250113649³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250113619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36768032 + ... + 36768065.

It is an arithmetic number, because the mean of its divisors is an integer number (330912441).

Almost surely, 2^1250113649 is an apocalyptic number.

It is an amenable number.

1250113649 is a deficient number, since it is larger than the sum of its proper divisors (73536115).

1250113649 is an equidigital number, since it uses as much as digits as its factorization.

1250113649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73536114.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1250113649 is about 35356.9462623683. The cubic root of 1250113649 is about 1077.2499906063.

The spelling of 1250113649 in words is "one billion, two hundred fifty million, one hundred thirteen thousand, six hundred forty-nine".