1145737727 has 4 divisors (see below), whose sum is σ = 1159541880. Its totient is φ = 1131933576.

The previous prime is 1145737699. The next prime is 1145737787. The reversal of 1145737727 is 7277375411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7277375411 = 521 ⋅13968091.

It is a cyclic number.

It is not a de Polignac number, because 1145737727 - 2²² = 1141543423 is a prime.

It is a super-2 number, since 2×1145737727² = 2625429878142253058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145737787) 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, 6901952 + ... + 6902117.

It is an arithmetic number, because the mean of its divisors is an integer number (289885470).

Almost surely, 2^1145737727 is an apocalyptic number.

1145737727 is a deficient number, since it is larger than the sum of its proper divisors (13804153).

1145737727 is an equidigital number, since it uses as much as digits as its factorization.

1145737727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804152.

The product of its digits is 288120, while the sum is 44.

The square root of 1145737727 is about 33848.7477907234. The cubic root of 1145737727 is about 1046.3935916660.

The spelling of 1145737727 in words is "one billion, one hundred forty-five million, seven hundred thirty-seven thousand, seven hundred twenty-seven".