154686493 has 16 divisors (see below), whose sum is σ = 174787200. Its totient is φ = 135898560.

The previous prime is 154686461. The next prime is 154686509. The reversal of 154686493 is 394686451.

It is a cyclic number.

It is not a de Polignac number, because 154686493 - 2⁵ = 154686461 is a prime.

It is a super-2 number, since 2×154686493² = 47855822233278098, 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 (154686443) 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, 23878 + ... + 29656.

It is an arithmetic number, because the mean of its divisors is an integer number (10924200).

Almost surely, 2^154686493 is an apocalyptic number.

154686493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

154686493 is a deficient number, since it is larger than the sum of its proper divisors (20100707).

154686493 is a wasteful number, since it uses less digits than its factorization.

154686493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892.

The product of its digits is 622080, while the sum is 46.

The square root of 154686493 is about 12437.3024808437. The cubic root of 154686493 is about 536.8061273985.

The spelling of 154686493 in words is "one hundred fifty-four million, six hundred eighty-six thousand, four hundred ninety-three".