1226994995 has 4 divisors (see below), whose sum is σ = 1472394000. Its totient is φ = 981595992.

The previous prime is 1226994953. The next prime is 1226995013. The reversal of 1226994995 is 5994996221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5994996221 = 179 ⋅33491599.

It is a cyclic number.

It is not a de Polignac number, because 1226994995 - 2²⁶ = 1159886131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226994995.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122699495 + ... + 122699504.

It is an arithmetic number, because the mean of its divisors is an integer number (368098500).

Almost surely, 2^1226994995 is an apocalyptic number.

1226994995 is a deficient number, since it is larger than the sum of its proper divisors (245399005).

1226994995 is an equidigital number, since it uses as much as digits as its factorization.

1226994995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245399004.

The product of its digits is 3149280, while the sum is 56.

The square root of 1226994995 is about 35028.4883344971. The cubic root of 1226994995 is about 1070.5680144237.

The spelling of 1226994995 in words is "one billion, two hundred twenty-six million, nine hundred ninety-four thousand, nine hundred ninety-five".