154978863 has 16 divisors (see below), whose sum is σ = 222823776. Its totient is φ = 95247360.

The previous prime is 154978849. The next prime is 154978883. The reversal of 154978863 is 368879451.

It is not a de Polignac number, because 154978863 - 2¹⁰ = 154977839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154978823) 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, 34423 + ... + 38663.

It is an arithmetic number, because the mean of its divisors is an integer number (13926486).

Almost surely, 2^154978863 is an apocalyptic number.

154978863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

154978863 is a deficient number, since it is larger than the sum of its proper divisors (67844913).

154978863 is a wasteful number, since it uses less digits than its factorization.

154978863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194.

The product of its digits is 1451520, while the sum is 51.

The square root of 154978863 is about 12449.0506866990. The cubic root of 154978863 is about 537.1441168977.

The spelling of 154978863 in words is "one hundred fifty-four million, nine hundred seventy-eight thousand, eight hundred sixty-three".