1401595890 has 48 divisors (see below), whose sum is σ = 3457302912. Its totient is φ = 363646656.

The previous prime is 1401595859. The next prime is 1401595891. The reversal of 1401595890 is 985951041.

It is not an unprimeable number, because it can be changed into a prime (1401595891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24007 + ... + 58133.

It is an arithmetic number, because the mean of its divisors is an integer number (72027144).

Almost surely, 2^1401595890 is an apocalyptic number.

1401595890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401595890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728651456).

1401595890 is an abundant number, since it is smaller than the sum of its proper divisors (2055707022).

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

1401595890 is a wasteful number, since it uses less digits than its factorization.

1401595890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34211 (or 34174 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 1401595890 is about 37437.8937708841. The cubic root of 1401595890 is about 1119.1138531662.

The spelling of 1401595890 in words is "one billion, four hundred one million, five hundred ninety-five thousand, eight hundred ninety".