3781955430 has 72 divisors (see below), whose sum is σ = 10808297136. Its totient is φ = 916835040.

The previous prime is 3781955423. The next prime is 3781955447. The reversal of 3781955430 is 345591873.

3781955430 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 162754 + ... + 184533.

It is an arithmetic number, because the mean of its divisors is an integer number (150115238).

Almost surely, 2^3781955430 is an apocalyptic number.

3781955430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3781955430 is an abundant number, since it is smaller than the sum of its proper divisors (7026341706).

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

3781955430 is a wasteful number, since it uses less digits than its factorization.

3781955430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347322 (or 347308 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 3781955430 is about 61497.6050753198. The cubic root of 3781955430 is about 1558.0167969151.

The spelling of 3781955430 in words is "three billion, seven hundred eighty-one million, nine hundred fifty-five thousand, four hundred thirty".