3745284531609 has 8 divisors (see below), whose sum is σ = 5002219887840. Its totient is φ = 2492602764896.

The previous prime is 3745284531551. The next prime is 3745284531629. The reversal of 3745284531609 is 9061354825473.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3745284531609 - 2¹³ = 3745284523417 is a prime.

It is a super-4 number, since 4×3745284531609⁴ (a number of 51 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (3745284531629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063395324 + ... + 1063398845.

It is an arithmetic number, because the mean of its divisors is an integer number (625277485980).

It is a 2-persistent number, because it is pandigital, and so is 2⋅3745284531609 = 7490569063218, but 3⋅3745284531609 = 11235853594827 is not.

Almost surely, 2^{3745284531609} is an apocalyptic number.

It is an amenable number.

3745284531609 is a deficient number, since it is larger than the sum of its proper divisors (1256935356231).

3745284531609 is a wasteful number, since it uses less digits than its factorization.

3745284531609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126794759.

The product of its (nonzero) digits is 21772800, while the sum is 57.

The spelling of 3745284531609 in words is "three trillion, seven hundred forty-five billion, two hundred eighty-four million, five hundred thirty-one thousand, six hundred nine".