1219402094 has 4 divisors (see below), whose sum is σ = 1829103144. Its totient is φ = 609701046.

The previous prime is 1219402087. The next prime is 1219402099. The reversal of 1219402094 is 4902049121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1219402094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219402099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304850522 + ... + 304850525.

It is an arithmetic number, because the mean of its divisors is an integer number (457275786).

Almost surely, 2^1219402094 is an apocalyptic number.

1219402094 is a deficient number, since it is larger than the sum of its proper divisors (609701050).

1219402094 is an equidigital number, since it uses as much as digits as its factorization.

1219402094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609701049.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1219402094 is about 34919.9383447337. The cubic root of 1219402094 is about 1068.3551441559.

The spelling of 1219402094 in words is "one billion, two hundred nineteen million, four hundred two thousand, ninety-four".