3781023870 has 32 divisors (see below), whose sum is σ = 9772493472. Its totient is φ = 930713472.

The previous prime is 3781023823. The next prime is 3781023871. The reversal of 3781023870 is 783201873.

It is a super-2 number, since 2×3781023870² = 28592283011019553800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781023871) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 4847077 + ... + 4847856.

It is an arithmetic number, because the mean of its divisors is an integer number (305390421).

Almost surely, 2^3781023870 is an apocalyptic number.

3781023870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3781023870 is an abundant number, since it is smaller than the sum of its proper divisors (5991469602).

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

3781023870 is a wasteful number, since it uses less digits than its factorization.

3781023870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9694956.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 3781023870 is about 61490.0306553835. The cubic root of 3781023870 is about 1557.8888643912. Note that the first 4 decimals are identical.

The spelling of 3781023870 in words is "three billion, seven hundred eighty-one million, twenty-three thousand, eight hundred seventy".