1127913391 has 4 divisors (see below), whose sum is σ = 1230450984. Its totient is φ = 1025375800.

The previous prime is 1127913389. The next prime is 1127913401. The reversal of 1127913391 is 1933197211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1127913391 - 2¹ = 1127913389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1127913391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127913691) 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, 51268780 + ... + 51268801.

It is an arithmetic number, because the mean of its divisors is an integer number (307612746).

Almost surely, 2^1127913391 is an apocalyptic number.

1127913391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1127913391 is a deficient number, since it is larger than the sum of its proper divisors (102537593).

1127913391 is a wasteful number, since it uses less digits than its factorization.

1127913391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102537592.

The product of its digits is 10206, while the sum is 37.

The square root of 1127913391 is about 33584.4218500185. The cubic root of 1127913391 is about 1040.9389298612.

The spelling of 1127913391 in words is "one billion, one hundred twenty-seven million, nine hundred thirteen thousand, three hundred ninety-one".