1901283240 has 64 divisors (see below), whose sum is σ = 5727801600. Its totient is φ = 504879872.

The previous prime is 1901283233. The next prime is 1901283269. The reversal of 1901283240 is 423821091.

It is a super-2 number, since 2×1901283240² = 7229755917409795200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1901283198 and 1901283207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4467 + ... + 61826.

It is an arithmetic number, because the mean of its divisors is an integer number (89496900).

Almost surely, 2^1901283240 is an apocalyptic number.

1901283240 is a gapful number since it is divisible by the number (10) 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 1901283240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2863900800).

1901283240 is an abundant number, since it is smaller than the sum of its proper divisors (3826518360).

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

1901283240 is a wasteful number, since it uses less digits than its factorization.

1901283240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66546 (or 66542 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1901283240 is about 43603.7067231675. The cubic root of 1901283240 is about 1238.8411041991.

The spelling of 1901283240 in words is "one billion, nine hundred one million, two hundred eighty-three thousand, two hundred forty".