7273135381 has 16 divisors (see below), whose sum is σ = 8147088000. Its totient is φ = 6452379648.

The previous prime is 7273135319. The next prime is 7273135391. The reversal of 7273135381 is 1835313727.

It is not a de Polignac number, because 7273135381 - 2⁷ = 7273135253 is a prime.

It is a super-2 number, since 2×7273135381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7273135391) 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, 7701 + ... + 120853.

It is an arithmetic number, because the mean of its divisors is an integer number (509193000).

Almost surely, 2^7273135381 is an apocalyptic number.

It is an amenable number.

7273135381 is a deficient number, since it is larger than the sum of its proper divisors (873952619).

7273135381 is a wasteful number, since it uses less digits than its factorization.

7273135381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113388.

The product of its digits is 105840, while the sum is 40.

The square root of 7273135381 is about 85282.6792555206. The cubic root of 7273135381 is about 1937.4948517158.

The spelling of 7273135381 in words is "seven billion, two hundred seventy-three million, one hundred thirty-five thousand, three hundred eighty-one".