1226015165 has 16 divisors (see below), whose sum is σ = 1563090480. Its totient is φ = 921392640.

The previous prime is 1226015117. The next prime is 1226015171. The reversal of 1226015165 is 5615106221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 120253156 + 1105762009 = 10966^2 + 33253^2 .

It is not a de Polignac number, because 1226015165 - 2¹⁸ = 1225753021 is a prime.

It is a super-2 number, since 2×1226015165² = 3006226369619954450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108896 + ... + 119625.

It is an arithmetic number, because the mean of its divisors is an integer number (97693155).

Almost surely, 2^1226015165 is an apocalyptic number.

It is an amenable number.

1226015165 is a deficient number, since it is larger than the sum of its proper divisors (337075315).

1226015165 is a wasteful number, since it uses less digits than its factorization.

1226015165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228592.

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

The square root of 1226015165 is about 35014.4993538391. The cubic root of 1226015165 is about 1070.2829673482.

The spelling of 1226015165 in words is "one billion, two hundred twenty-six million, fifteen thousand, one hundred sixty-five".