1234811906 has 4 divisors (see below), whose sum is σ = 1852217862. Its totient is φ = 617405952.

The previous prime is 1234811873. The next prime is 1234811911. The reversal of 1234811906 is 6091184321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6091184321 = 79 ⋅77103599.

It can be written as a sum of positive squares in only one way, i.e., 829152025 + 405659881 = 28795^2 + 20141^2 .

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 as a sum of consecutive naturals, namely, 308702975 + ... + 308702978.

Almost surely, 2^1234811906 is an apocalyptic number.

1234811906 is a deficient number, since it is larger than the sum of its proper divisors (617405956).

1234811906 is an equidigital number, since it uses as much as digits as its factorization.

1234811906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617405955.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1234811906 is about 35139.8905234493. The cubic root of 1234811906 is about 1072.8366534427.

The spelling of 1234811906 in words is "one billion, two hundred thirty-four million, eight hundred eleven thousand, nine hundred six".