1230440194 has 4 divisors (see below), whose sum is σ = 1845660294. Its totient is φ = 615220096.

The previous prime is 1230440149. The next prime is 1230440257. The reversal of 1230440194 is 4910440321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 770895225 + 459544969 = 27765^2 + 21437^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307610047 + ... + 307610050.

Almost surely, 2^1230440194 is an apocalyptic number.

1230440194 is a deficient number, since it is larger than the sum of its proper divisors (615220100).

1230440194 is an equidigital number, since it uses as much as digits as its factorization.

1230440194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615220099.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1230440194 is about 35077.6309633362. The cubic root of 1230440194 is about 1071.5690707112.

The spelling of 1230440194 in words is "one billion, two hundred thirty million, four hundred forty thousand, one hundred ninety-four".