1078431149 has 4 divisors (see below), whose sum is σ = 1115618460. Its totient is φ = 1041243840.

The previous prime is 1078431113. The next prime is 1078431197. The reversal of 1078431149 is 9411348701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9411348701 = 53 ⋅177572617.

It can be written as a sum of positive squares in 2 ways, for example, as 875568100 + 202863049 = 29590^2 + 14243^2 .

It is not a de Polignac number, because 1078431149 - 2²⁴ = 1061653933 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 (1078431049) 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, 18593612 + ... + 18593669.

It is an arithmetic number, because the mean of its divisors is an integer number (278904615).

Almost surely, 2^1078431149 is an apocalyptic number.

It is an amenable number.

1078431149 is a deficient number, since it is larger than the sum of its proper divisors (37187311).

1078431149 is an equidigital number, since it uses as much as digits as its factorization.

1078431149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37187310.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1078431149 is about 32839.4754677964. The cubic root of 1078431149 is about 1025.4885314281.

The spelling of 1078431149 in words is "one billion, seventy-eight million, four hundred thirty-one thousand, one hundred forty-nine".