1361044138 has 8 divisors (see below), whose sum is σ = 2149017120. Its totient is φ = 644705100.

The previous prime is 1361044133. The next prime is 1361044219. The reversal of 1361044138 is 8314401631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1361044138² = 3704882291168326088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361044133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17908438 + ... + 17908513.

It is an arithmetic number, because the mean of its divisors is an integer number (268627140).

Almost surely, 2^1361044138 is an apocalyptic number.

1361044138 is a deficient number, since it is larger than the sum of its proper divisors (787972982).

1361044138 is a wasteful number, since it uses less digits than its factorization.

1361044138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35816972.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1361044138 is about 36892.3316964379. The cubic root of 1361044138 is about 1108.2151164520.

Adding to 1361044138 its reverse (8314401631), we get a palindrome (9675445769).

The spelling of 1361044138 in words is "one billion, three hundred sixty-one million, forty-four thousand, one hundred thirty-eight".