1997183088 has 80 divisors (see below), whose sum is σ = 5746259200. Its totient is φ = 664148160.

The previous prime is 1997183063. The next prime is 1997183113. The reversal of 1997183088 is 8803817991.

It is an interprime number because it is at equal distance from previous prime (1997183063) and next prime (1997183113).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184383 + ... + 194913.

It is an arithmetic number, because the mean of its divisors is an integer number (71828240).

Almost surely, 2^1997183088 is an apocalyptic number.

1997183088 is a gapful number since it is divisible by the number (18) 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 1997183088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2873129600).

1997183088 is an abundant number, since it is smaller than the sum of its proper divisors (3749076112).

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

1997183088 is a wasteful number, since it uses less digits than its factorization.

1997183088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987 (or 10975 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The square root of 1997183088 is about 44689.8544190961. The cubic root of 1997183088 is about 1259.3292575159.

The spelling of 1997183088 in words is "one billion, nine hundred ninety-seven million, one hundred eighty-three thousand, eighty-eight".