1049391045 has 40 divisors (see below), whose sum is σ = 1991798424. Its totient is φ = 526749696.

The previous prime is 1049391019. The next prime is 1049391047. The reversal of 1049391045 is 5401939401.

It is a happy number.

1049391045 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46908801 + 1002482244 = 6849^2 + 31662^2 .

It is not a de Polignac number, because 1049391045 - 2¹⁴ = 1049374661 is a prime.

It is a super-2 number, since 2×1049391045² = 2202443130652384050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049391047) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69324 + ... + 83093.

Almost surely, 2^1049391045 is an apocalyptic number.

1049391045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1049391045 is a deficient number, since it is larger than the sum of its proper divisors (942407379).

1049391045 is a wasteful number, since it uses less digits than its factorization.

1049391045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152451 (or 152442 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1049391045 is about 32394.3057496221. The cubic root of 1049391045 is about 1016.1998300419.

The spelling of 1049391045 in words is "one billion, forty-nine million, three hundred ninety-one thousand, forty-five".