1138212994 has 4 divisors (see below), whose sum is σ = 1707319494. Its totient is φ = 569106496.

The previous prime is 1138212941. The next prime is 1138213003. The reversal of 1138212994 is 4992128311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4992128311 = 23 ⋅217049057.

It can be written as a sum of positive squares in only one way, i.e., 640343025 + 497869969 = 25305^2 + 22313^2 .

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, 284553247 + ... + 284553250.

Almost surely, 2^1138212994 is an apocalyptic number.

1138212994 is a deficient number, since it is larger than the sum of its proper divisors (569106500).

1138212994 is an equidigital number, since it uses as much as digits as its factorization.

1138212994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569106499.

The product of its digits is 31104, while the sum is 40.

The square root of 1138212994 is about 33737.4123785450. The cubic root of 1138212994 is about 1044.0977978044.

The spelling of 1138212994 in words is "one billion, one hundred thirty-eight million, two hundred twelve thousand, nine hundred ninety-four".