3649973292 has 192 divisors, whose sum is σ = 11251968000. Its totient is φ = 1001113344.

The previous prime is 3649973281. The next prime is 3649973303. The reversal of 3649973292 is 2923799463.

3649973292 is a `hidden beast` number, since 36 + 499 + 7 + 32 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (3649973281) and next prime (3649973303).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5020233 + ... + 5020959.

It is an arithmetic number, because the mean of its divisors is an integer number (58604000).

Almost surely, 2^3649973292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3649973292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5625984000).

3649973292 is an abundant number, since it is smaller than the sum of its proper divisors (7601994708).

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

3649973292 is a wasteful number, since it uses less digits than its factorization.

3649973292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005 (or 997 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 3649973292 is about 60415.0088305878. The cubic root of 3649973292 is about 1539.6779688706.

The spelling of 3649973292 in words is "three billion, six hundred forty-nine million, nine hundred seventy-three thousand, two hundred ninety-two".