3728403748402 has 4 divisors (see below), whose sum is σ = 5592605622606. Its totient is φ = 1864201874200.

The previous prime is 3728403748339. The next prime is 3728403748457. The reversal of 3728403748402 is 2048473048273.

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., 3503594060521 + 224809687881 = 1871789^2 + 474141^2 .

It is a super-2 number, since 2×3728403748402² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3728403748402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932100937099 + ... + 932100937102.

Almost surely, 2^{3728403748402} is an apocalyptic number.

3728403748402 is a deficient number, since it is larger than the sum of its proper divisors (1864201874204).

3728403748402 is a wasteful number, since it uses less digits than its factorization.

3728403748402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864201874203.

The product of its (nonzero) digits is 7225344, while the sum is 52.

The spelling of 3728403748402 in words is "three trillion, seven hundred twenty-eight billion, four hundred three million, seven hundred forty-eight thousand, four hundred two".