154893661 has 16 divisors (see below), whose sum is σ = 174545280. Its totient is φ = 136382400.

The previous prime is 154893659. The next prime is 154893667. The reversal of 154893661 is 166398451.

It is a cyclic number.

It is not a de Polignac number, because 154893661 - 2¹ = 154893659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154893667) 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, 209230 + ... + 209968.

It is an arithmetic number, because the mean of its divisors is an integer number (10909080).

Almost surely, 2^154893661 is an apocalyptic number.

It is an amenable number.

154893661 is a deficient number, since it is larger than the sum of its proper divisors (19651619).

154893661 is a wasteful number, since it uses less digits than its factorization.

154893661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476.

The product of its digits is 155520, while the sum is 43.

The square root of 154893661 is about 12445.6281882435. The cubic root of 154893661 is about 537.0456644560.

The spelling of 154893661 in words is "one hundred fifty-four million, eight hundred ninety-three thousand, six hundred sixty-one".