3787749021338 has 4 divisors (see below), whose sum is σ = 5681623532010. Its totient is φ = 1893874510668.

The previous prime is 3787749021319. The next prime is 3787749021373. The reversal of 3787749021338 is 8331209477873.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 3611166694249 + 176582327089 = 1900307^2 + 420217^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946937255333 + ... + 946937255336.

Almost surely, 2^{3787749021338} is an apocalyptic number.

3787749021338 is a deficient number, since it is larger than the sum of its proper divisors (1893874510672).

3787749021338 is a wasteful number, since it uses less digits than its factorization.

3787749021338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893874510671.

The product of its (nonzero) digits is 42674688, while the sum is 62.

The spelling of 3787749021338 in words is "three trillion, seven hundred eighty-seven billion, seven hundred forty-nine million, twenty-one thousand, three hundred thirty-eight".