1156620215 has 8 divisors (see below), whose sum is σ = 1388673888. Its totient is φ = 924809760.

The previous prime is 1156620187. The next prime is 1156620217. The reversal of 1156620215 is 5120266511.

It is a happy number.

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

It is not a de Polignac number, because 1156620215 - 2¹² = 1156616119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156620217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50171 + ... + 69500.

It is an arithmetic number, because the mean of its divisors is an integer number (173584236).

Almost surely, 2^1156620215 is an apocalyptic number.

1156620215 is a deficient number, since it is larger than the sum of its proper divisors (232053673).

1156620215 is a wasteful number, since it uses less digits than its factorization.

1156620215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121609.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1156620215 is about 34009.1195857817. The cubic root of 1156620215 is about 1049.6961221925.

Adding to 1156620215 its reverse (5120266511), we get a palindrome (6276886726).

The spelling of 1156620215 in words is "one billion, one hundred fifty-six million, six hundred twenty thousand, two hundred fifteen".