1554164172 has 180 divisors, whose sum is σ = 4623197040. Its totient is φ = 454386240.

The previous prime is 1554164153. The next prime is 1554164173. The reversal of 1554164172 is 2714614551.

1554164172 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 1 + 641 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554164173) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1136233 + ... + 1137599.

It is an arithmetic number, because the mean of its divisors is an integer number (25684428).

Almost surely, 2^1554164172 is an apocalyptic number.

1554164172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1554164172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2311598520).

1554164172 is an abundant number, since it is smaller than the sum of its proper divisors (3069032868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1554164172 is a wasteful number, since it uses less digits than its factorization.

1554164172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 1412 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 1554164172 is about 39422.8889352366. Note that the first 3 decimals coincide. The cubic root of 1554164172 is about 1158.3299819351.

The spelling of 1554164172 in words is "one billion, five hundred fifty-four million, one hundred sixty-four thousand, one hundred seventy-two".