4067901990 has 24 divisors (see below), whose sum is σ = 10576545408. Its totient is φ = 1084773840.

The previous prime is 4067901983. The next prime is 4067902073. The reversal of 4067901990 is 991097604.

4067901990 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 11 ways as a sum of consecutive naturals, for example, 22599366 + ... + 22599545.

It is an arithmetic number, because the mean of its divisors is an integer number (440689392).

Almost surely, 2^4067901990 is an apocalyptic number.

4067901990 is an abundant number, since it is smaller than the sum of its proper divisors (6508643418).

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

4067901990 is a wasteful number, since it uses less digits than its factorization.

4067901990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45198924 (or 45198921 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 4067901990 is about 63780.1065380107. The cubic root of 4067901990 is about 1596.3330070953. Note that the first 3 decimals are identical.

The spelling of 4067901990 in words is "four billion, sixty-seven million, nine hundred one thousand, nine hundred ninety".