3753951649 has 4 divisors (see below), whose sum is σ = 4290230464. Its totient is φ = 3217672836.

The previous prime is 3753951613. The next prime is 3753951653. The reversal of 3753951649 is 9461593573.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9461593573 = 40883 ⋅231431.

It is not a de Polignac number, because 3753951649 - 2²⁵ = 3720397217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3753951596 and 3753951605.

It is not an unprimeable number, because it can be changed into a prime (3753051649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268139397 + ... + 268139410.

It is an arithmetic number, because the mean of its divisors is an integer number (1072557616).

Almost surely, 2^3753951649 is an apocalyptic number.

It is an amenable number.

3753951649 is a deficient number, since it is larger than the sum of its proper divisors (536278815).

3753951649 is an equidigital number, since it uses as much as digits as its factorization.

3753951649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536278814.

The product of its digits is 3061800, while the sum is 52.

The square root of 3753951649 is about 61269.5001530125. The cubic root of 3753951649 is about 1554.1617810553.

The spelling of 3753951649 in words is "three billion, seven hundred fifty-three million, nine hundred fifty-one thousand, six hundred forty-nine".