1451161115 has 4 divisors (see below), whose sum is σ = 1741393344. Its totient is φ = 1160928888.

The previous prime is 1451161111. The next prime is 1451161121. The reversal of 1451161115 is 5111611541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5111611541 = 43 ⋅118874687.

It is a cyclic number.

It is not a de Polignac number, because 1451161115 - 2² = 1451161111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451161111) 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, 145116107 + ... + 145116116.

It is an arithmetic number, because the mean of its divisors is an integer number (435348336).

Almost surely, 2^1451161115 is an apocalyptic number.

1451161115 is a deficient number, since it is larger than the sum of its proper divisors (290232229).

1451161115 is an equidigital number, since it uses as much as digits as its factorization.

1451161115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290232228.

The product of its digits is 600, while the sum is 26.

The square root of 1451161115 is about 38094.1086652516. The cubic root of 1451161115 is about 1132.1532324606.

Adding to 1451161115 its reverse (5111611541), we get a palindrome (6562772656).

The spelling of 1451161115 in words is "one billion, four hundred fifty-one million, one hundred sixty-one thousand, one hundred fifteen".