2155485437 has 8 divisors (see below), whose sum is σ = 2608318656. Its totient is φ = 1738878912.

The previous prime is 2155485421. The next prime is 2155485439. The reversal of 2155485437 is 7345845512.

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 2155485437 - 2⁴ = 2155485421 is a prime.

It is a super-2 number, since 2×2155485437² = 9292234938238161938, which 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 (2155485439) 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, 9056543 + ... + 9056780.

It is an arithmetic number, because the mean of its divisors is an integer number (326039832).

Almost surely, 2^2155485437 is an apocalyptic number.

It is an amenable number.

2155485437 is a deficient number, since it is larger than the sum of its proper divisors (452833219).

2155485437 is a wasteful number, since it uses less digits than its factorization.

2155485437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18113347.

The product of its digits is 672000, while the sum is 44.

The square root of 2155485437 is about 46427.2057849705. The cubic root of 2155485437 is about 1291.7595996421.

The spelling of 2155485437 in words is "two billion, one hundred fifty-five million, four hundred eighty-five thousand, four hundred thirty-seven".