244838938891 has 16 divisors (see below), whose sum is σ = 263199513024. Its totient is φ = 226927954944.

The previous prime is 244838938871. The next prime is 244838938933. The reversal of 244838938891 is 198839838442.

It is not a de Polignac number, because 244838938891 - 2⁷ = 244838938763 is a prime.

It is a super-2 number, since 2×244838938891² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244838938831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650461 + ... + 955393.

It is an arithmetic number, because the mean of its divisors is an integer number (16449969564).

Almost surely, 2^244838938891 is an apocalyptic number.

244838938891 is a deficient number, since it is larger than the sum of its proper divisors (18360574133).

244838938891 is a wasteful number, since it uses less digits than its factorization.

244838938891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305670.

The product of its digits is 95551488, while the sum is 67.

The spelling of 244838938891 in words is "two hundred forty-four billion, eight hundred thirty-eight million, nine hundred thirty-eight thousand, eight hundred ninety-one".