1901268 has 18 divisors (see below), whose sum is σ = 4806074. Its totient is φ = 633744.

The previous prime is 1901267. The next prime is 1901299. The reversal of 1901268 is 8621091.

It can be written as a sum of positive squares in only one way, i.e., 956484 + 944784 = 978^2 + 972^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1901268² = 7229640015648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26371 + ... + 26442.

2^1901268 is an apocalyptic number.

1901268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1901268 is an abundant number, since it is smaller than the sum of its proper divisors (2904806).

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

1901268 is a wasteful number, since it uses less digits than its factorization.

1901268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52823 (or 52818 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1901268 is about 1378.8647504378. The cubic root of 1901268 is about 123.8837794156.

The spelling of 1901268 in words is "one million, nine hundred one thousand, two hundred sixty-eight".