3649337784975 has 24 divisors (see below), whose sum is σ = 6033811843072. Its totient is φ = 1946236053600.

The previous prime is 3649337784947. The next prime is 3649337784997. The reversal of 3649337784975 is 5794877339463.

It is a Cunningham number, because it is equal to 1910324²-1.

It is not a de Polignac number, because 3649337784975 - 2⁵ = 3649337784943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3649337784897 and 3649337784906.

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, 955164 + ... + 2865486.

Almost surely, 2^{3649337784975} is an apocalyptic number.

3649337784975 is a deficient number, since it is larger than the sum of its proper divisors (2384474058097).

3649337784975 is a wasteful number, since it uses less digits than its factorization.

3649337784975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935807 (or 1935802 counting only the distinct ones).

The product of its digits is 2880541440, while the sum is 75.

The spelling of 3649337784975 in words is "three trillion, six hundred forty-nine billion, three hundred thirty-seven million, seven hundred eighty-four thousand, nine hundred seventy-five".