1077861249 has 12 divisors (see below), whose sum is σ = 1614574416. Its totient is φ = 718574004.

The previous prime is 1077861247. The next prime is 1077861287. The reversal of 1077861249 is 9421687701.

It is a happy number.

It is not a de Polignac number, because 1077861249 - 2¹ = 1077861247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1077861247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2217579 + ... + 2218064.

It is an arithmetic number, because the mean of its divisors is an integer number (134547868).

Almost surely, 2^1077861249 is an apocalyptic number.

It is an amenable number.

1077861249 is a deficient number, since it is larger than the sum of its proper divisors (536713167).

1077861249 is an frugal number, since it uses more digits than its factorization.

1077861249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435658 (or 4435646 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1077861249 is about 32830.7972641543. The cubic root of 1077861249 is about 1025.3078588242.

It can be divided in two parts, 10778 and 61249, that added together give a palindrome (72027).

The spelling of 1077861249 in words is "one billion, seventy-seven million, eight hundred sixty-one thousand, two hundred forty-nine".