3649623634 has 4 divisors (see below), whose sum is σ = 5474435454. Its totient is φ = 1824811816.

The previous prime is 3649623629. The next prime is 3649623671. The reversal of 3649623634 is 4363269463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4363269463 = 7 ⋅623324209.

It can be written as a sum of positive squares in only one way, i.e., 2254825225 + 1394798409 = 47485^2 + 37347^2 .

It is a super-3 number, since 3×3649623634³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912405907 + ... + 912405910.

Almost surely, 2^3649623634 is an apocalyptic number.

3649623634 is a deficient number, since it is larger than the sum of its proper divisors (1824811820).

3649623634 is a wasteful number, since it uses less digits than its factorization.

3649623634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824811819.

The product of its digits is 1679616, while the sum is 46.

The square root of 3649623634 is about 60412.1149604945. The cubic root of 3649623634 is about 1539.6288015783.

The spelling of 3649623634 in words is "three billion, six hundred forty-nine million, six hundred twenty-three thousand, six hundred thirty-four".