2139280481 has 8 divisors (see below), whose sum is σ = 2336289984. Its totient is φ = 1946906640.

The previous prime is 2139280417. The next prime is 2139280501. The reversal of 2139280481 is 1840829312.

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

It is a cyclic number.

It is not a de Polignac number, because 2139280481 - 2⁶ = 2139280417 is a prime.

It is a super-2 number, since 2×2139280481² = 9153041952775182722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139280981) 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, 1157951 + ... + 1159796.

It is an arithmetic number, because the mean of its divisors is an integer number (292036248).

Almost surely, 2^2139280481 is an apocalyptic number.

It is an amenable number.

2139280481 is a deficient number, since it is larger than the sum of its proper divisors (197009503).

2139280481 is a wasteful number, since it uses less digits than its factorization.

2139280481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317831.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 2139280481 is about 46252.3564913184. The cubic root of 2139280481 is about 1288.5143004258.

The spelling of 2139280481 in words is "two billion, one hundred thirty-nine million, two hundred eighty thousand, four hundred eighty-one".