1234978115 has 12 divisors (see below), whose sum is σ = 1723928976. Its totient is φ = 846841968.

The previous prime is 1234978109. The next prime is 1234978159. The reversal of 1234978115 is 5118794321.

It is not a de Polignac number, because 1234978115 - 2⁶ = 1234978051 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2520119 + ... + 2520608.

It is an arithmetic number, because the mean of its divisors is an integer number (143660748).

Almost surely, 2^1234978115 is an apocalyptic number.

1234978115 is a deficient number, since it is larger than the sum of its proper divisors (488950861).

1234978115 is an equidigital number, since it uses as much as digits as its factorization.

1234978115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040746 (or 5040739 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 1234978115 is about 35142.2554057078. The cubic root of 1234978115 is about 1072.8847868484.

The spelling of 1234978115 in words is "one billion, two hundred thirty-four million, nine hundred seventy-eight thousand, one hundred fifteen".