154713981 has 8 divisors (see below), whose sum is σ = 206627584. Its totient is φ = 102971520.

The previous prime is 154713971. The next prime is 154713997. The reversal of 154713981 is 189317451.

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

It is not a de Polignac number, because 154713981 - 2¹¹ = 154711933 is a prime.

It is a super-2 number, since 2×154713981² = 47872831833736722, 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 (154713961) 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, 40660 + ... + 44301.

It is an arithmetic number, because the mean of its divisors is an integer number (25828448).

Almost surely, 2^154713981 is an apocalyptic number.

It is an amenable number.

154713981 is a deficient number, since it is larger than the sum of its proper divisors (51913603).

154713981 is an equidigital number, since it uses as much as digits as its factorization.

154713981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85571.

The product of its digits is 30240, while the sum is 39.

The square root of 154713981 is about 12438.4074945308. The cubic root of 154713981 is about 536.8379225746.

The spelling of 154713981 in words is "one hundred fifty-four million, seven hundred thirteen thousand, nine hundred eighty-one".