1156222415 has 4 divisors (see below), whose sum is σ = 1387466904. Its totient is φ = 924977928.

The previous prime is 1156222387. The next prime is 1156222451. The reversal of 1156222415 is 5142226511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5142226511 = 3257 ⋅1578823.

It is a cyclic number.

It is not a de Polignac number, because 1156222415 - 2²⁴ = 1139445199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115622237 + ... + 115622246.

It is an arithmetic number, because the mean of its divisors is an integer number (346866726).

Almost surely, 2^1156222415 is an apocalyptic number.

1156222415 is a deficient number, since it is larger than the sum of its proper divisors (231244489).

1156222415 is an equidigital number, since it uses as much as digits as its factorization.

1156222415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231244488.

The product of its digits is 4800, while the sum is 29.

The square root of 1156222415 is about 34003.2706515123. The cubic root of 1156222415 is about 1049.5757666390.

Adding to 1156222415 its reverse (5142226511), we get a palindrome (6298448926).

The spelling of 1156222415 in words is "one billion, one hundred fifty-six million, two hundred twenty-two thousand, four hundred fifteen".