3781019998 has 16 divisors (see below), whose sum is σ = 6619659264. Its totient is φ = 1585959480.

The previous prime is 3781019993. The next prime is 3781019999. The reversal of 3781019998 is 8999101873.

It is a super-2 number, since 2×3781019998² = 28592224450551840008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781019993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872458 + ... + 2873773.

It is an arithmetic number, because the mean of its divisors is an integer number (413728704).

Almost surely, 2^3781019998 is an apocalyptic number.

3781019998 is a deficient number, since it is larger than the sum of its proper divisors (2838639266).

3781019998 is a wasteful number, since it uses less digits than its factorization.

3781019998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746287.

The product of its (nonzero) digits is 979776, while the sum is 55.

The square root of 3781019998 is about 61489.9991705968. Note that the first 3 decimals coincide. The cubic root of 3781019998 is about 1557.8883325998. Note that the first 3 decimals are identical.

The spelling of 3781019998 in words is "three billion, seven hundred eighty-one million, nineteen thousand, nine hundred ninety-eight".