3678921045 has 32 divisors (see below), whose sum is σ = 6545658240. Its totient is φ = 1960485120.

The previous prime is 3678921013. The next prime is 3678921079. The reversal of 3678921045 is 5401298763.

3678921045 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3678921045 - 2⁵ = 3678921013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

3678921045 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164590 + ... + 185600.

It is an arithmetic number, because the mean of its divisors is an integer number (204551820).

It is a 1-persistent number, because it is pandigital, but 2⋅3678921045 = 7357842090 is not.

Almost surely, 2^3678921045 is an apocalyptic number.

3678921045 is the 35019-th octagonal number.

It is an amenable number.

3678921045 is a deficient number, since it is larger than the sum of its proper divisors (2866737195).

3678921045 is a wasteful number, since it uses less digits than its factorization.

3678921045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22322 (or 22316 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 3678921045 is about 60654.1098772375. The cubic root of 3678921045 is about 1543.7376246884.

The spelling of 3678921045 in words is "three billion, six hundred seventy-eight million, nine hundred twenty-one thousand, forty-five".