3772438640 has 40 divisors (see below), whose sum is σ = 8861359920. Its totient is φ = 1493415936.

The previous prime is 3772438627. The next prime is 3772438667. The reversal of 3772438640 is 468342773.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3772438591 and 3772438600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235310 + ... + 250829.

It is an arithmetic number, because the mean of its divisors is an integer number (221533998).

Almost surely, 2^3772438640 is an apocalyptic number.

It is an amenable number.

3772438640 is an abundant number, since it is smaller than the sum of its proper divisors (5088921280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3772438640 is a wasteful number, since it uses less digits than its factorization.

3772438640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486249 (or 486243 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 44.

The square root of 3772438640 is about 61420.1810482516. The cubic root of 3772438640 is about 1556.7088515627.

The spelling of 3772438640 in words is "three billion, seven hundred seventy-two million, four hundred thirty-eight thousand, six hundred forty".