1127691745 has 8 divisors (see below), whose sum is σ = 1354593384. Its totient is φ = 901244544.

The previous prime is 1127691731. The next prime is 1127691827. The reversal of 1127691745 is 5471967211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 139972561 + 987719184 = 11831^2 + 31428^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1127691745 - 2⁵ = 1127691713 is a prime.

It is a super-2 number, since 2×1127691745² = 2543377343482290050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108124 + ... + 118093.

It is an arithmetic number, because the mean of its divisors is an integer number (169324173).

Almost surely, 2^1127691745 is an apocalyptic number.

It is an amenable number.

1127691745 is a deficient number, since it is larger than the sum of its proper divisors (226901639).

1127691745 is an equidigital number, since it uses as much as digits as its factorization.

1127691745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227219.

The product of its digits is 105840, while the sum is 43.

The square root of 1127691745 is about 33581.1218543991. The cubic root of 1127691745 is about 1040.8707405048.

The spelling of 1127691745 in words is "one billion, one hundred twenty-seven million, six hundred ninety-one thousand, seven hundred forty-five".