1244552013 has 8 divisors (see below), whose sum is σ = 1843780800. Its totient is φ = 829701324.

The previous prime is 1244551999. The next prime is 1244552033. The reversal of 1244552013 is 3102554421.

1244552013 is a `hidden beast` number, since 1 + 2 + 4 + 455 + 201 + 3 = 666.

It is not a de Polignac number, because 1244552013 - 2⁵ = 1244551981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 46094519 = 1244552013 / (1 + 2 + 4 + 4 + 5 + 5 + 2 + 0 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244552033) 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, 23047233 + ... + 23047286.

It is an arithmetic number, because the mean of its divisors is an integer number (230472600).

Almost surely, 2^1244552013 is an apocalyptic number.

It is an amenable number.

1244552013 is a deficient number, since it is larger than the sum of its proper divisors (599228787).

1244552013 is an equidigital number, since it uses as much as digits as its factorization.

1244552013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46094528 (or 46094522 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1244552013 is about 35278.2087555477. The cubic root of 1244552013 is about 1075.6500882762.

The spelling of 1244552013 in words is "one billion, two hundred forty-four million, five hundred fifty-two thousand, thirteen".