1403890848 has 144 divisors (see below), whose sum is σ = 4229578080. Its totient is φ = 440474112.

The previous prime is 1403890837. The next prime is 1403890849. The reversal of 1403890848 is 8480983041.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (1403890849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 945915 + ... + 947397.

It is an arithmetic number, because the mean of its divisors is an integer number (29372070).

Almost surely, 2^1403890848 is an apocalyptic number.

1403890848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403890848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2114789040).

1403890848 is an abundant number, since it is smaller than the sum of its proper divisors (2825687232).

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

1403890848 is a wasteful number, since it uses less digits than its factorization.

1403890848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1403890848 is about 37468.5314363934. The cubic root of 1403890848 is about 1119.7243284115.

The spelling of 1403890848 in words is "one billion, four hundred three million, eight hundred ninety thousand, eight hundred forty-eight".