38043620281 has 8 divisors (see below), whose sum is σ = 39701260224. Its totient is φ = 36386277840.

The previous prime is 38043620249. The next prime is 38043620291. The reversal of 38043620281 is 18202634083.

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

It is not a de Polignac number, because 38043620281 - 2⁵ = 38043620249 is a prime.

It is a super-2 number, since 2×38043620281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38043620281.

It is not an unprimeable number, because it can be changed into a prime (38043620231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210151 + ... + 346771.

It is an arithmetic number, because the mean of its divisors is an integer number (4962657528).

Almost surely, 2^38043620281 is an apocalyptic number.

It is an amenable number.

38043620281 is a deficient number, since it is larger than the sum of its proper divisors (1657639943).

38043620281 is a wasteful number, since it uses less digits than its factorization.

38043620281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148751.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 38043620281 in words is "thirty-eight billion, forty-three million, six hundred twenty thousand, two hundred eighty-one".