1618473792 has 168 divisors, whose sum is σ = 4789505280. Its totient is φ = 481628160.

The previous prime is 1618473767. The next prime is 1618473817. The reversal of 1618473792 is 2973748161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1618473767) and next prime (1618473817).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1005084 + ... + 1006692.

It is an arithmetic number, because the mean of its divisors is an integer number (28508960).

Almost surely, 2^1618473792 is an apocalyptic number.

1618473792 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 1618473792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2394752640).

1618473792 is an abundant number, since it is smaller than the sum of its proper divisors (3171031488).

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

1618473792 is a wasteful number, since it uses less digits than its factorization.

1618473792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681 (or 1658 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 1618473792 is about 40230.2596561345. The cubic root of 1618473792 is about 1174.0913553370.

The spelling of 1618473792 in words is "one billion, six hundred eighteen million, four hundred seventy-three thousand, seven hundred ninety-two".