3626021387 has 4 divisors (see below), whose sum is σ = 3644242800. Its totient is φ = 3607799976.

The previous prime is 3626021381. The next prime is 3626021411. The reversal of 3626021387 is 7831206263.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3626021387 - 2¹⁸ = 3625759243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3626021387.

It is not an unprimeable number, because it can be changed into a prime (3626021381) 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, 9110408 + ... + 9110805.

It is an arithmetic number, because the mean of its divisors is an integer number (911060700).

Almost surely, 2^3626021387 is an apocalyptic number.

3626021387 is a deficient number, since it is larger than the sum of its proper divisors (18221413).

3626021387 is a wasteful number, since it uses less digits than its factorization.

3626021387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18221412.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 3626021387 is about 60216.4544539115. The cubic root of 3626021387 is about 1536.3026762814.

The spelling of 3626021387 in words is "three billion, six hundred twenty-six million, twenty-one thousand, three hundred eighty-seven".