1013385749 has 4 divisors (see below), whose sum is σ = 1013874336. Its totient is φ = 1012897164.

The previous prime is 1013385731. The next prime is 1013385757. The reversal of 1013385749 is 9475833101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1013385749 - 2¹² = 1013381653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013385799) 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, 241169 + ... + 245334.

It is an arithmetic number, because the mean of its divisors is an integer number (253468584).

Almost surely, 2^1013385749 is an apocalyptic number.

It is an amenable number.

1013385749 is a deficient number, since it is larger than the sum of its proper divisors (488587).

1013385749 is an equidigital number, since it uses as much as digits as its factorization.

1013385749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488586.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1013385749 is about 31833.7203135292. The cubic root of 1013385749 is about 1004.4421543792.

The spelling of 1013385749 in words is "one billion, thirteen million, three hundred eighty-five thousand, seven hundred forty-nine".