1220737147 has 6 divisors (see below), whose sum is σ = 1420041228. Its totient is φ = 1046346084.

The previous prime is 1220737129. The next prime is 1220737163. The reversal of 1220737147 is 7417370221.

It is not a de Polignac number, because 1220737147 - 2¹⁵ = 1220704379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220737117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12456453 + ... + 12456550.

It is an arithmetic number, because the mean of its divisors is an integer number (236673538).

Almost surely, 2^1220737147 is an apocalyptic number.

1220737147 is a deficient number, since it is larger than the sum of its proper divisors (199304081).

1220737147 is an equidigital number, since it uses as much as digits as its factorization.

1220737147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24913017 (or 24913010 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 1220737147 is about 34939.0490282721. The cubic root of 1220737147 is about 1068.7448954215.

The spelling of 1220737147 in words is "one billion, two hundred twenty million, seven hundred thirty-seven thousand, one hundred forty-seven".