11641901238 has 24 divisors (see below), whose sum is σ = 27517221576. Its totient is φ = 3527848800.

The previous prime is 11641901233. The next prime is 11641901261. The reversal of 11641901238 is 83210914611.

11641901238 is a `hidden beast` number, since 1 + 1 + 6 + 419 + 0 + 1 + 238 = 666.

It is a super-3 number, since 3×11641901238³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641901233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29398543 + ... + 29398938.

It is an arithmetic number, because the mean of its divisors is an integer number (1146550899).

Almost surely, 2^11641901238 is an apocalyptic number.

11641901238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11641901238 is an abundant number, since it is smaller than the sum of its proper divisors (15875320338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11641901238 is a wasteful number, since it uses less digits than its factorization.

11641901238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58797500 (or 58797497 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 11641901238 in words is "eleven billion, six hundred forty-one million, nine hundred one thousand, two hundred thirty-eight".