1901345 has 4 divisors (see below), whose sum is σ = 2281620. Its totient is φ = 1521072.

The previous prime is 1901329. The next prime is 1901353. The reversal of 1901345 is 5431091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 844561 = 1028^2 + 919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1901345 - 2⁴ = 1901329 is a prime.

It is a super-2 number, since 2×1901345² = 7230225618050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1901345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190130 + ... + 190139.

It is an arithmetic number, because the mean of its divisors is an integer number (570405).

2^1901345 is an apocalyptic number.

It is an amenable number.

1901345 is a deficient number, since it is larger than the sum of its proper divisors (380275).

1901345 is an equidigital number, since it uses as much as digits as its factorization.

1901345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380274.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1901345 is about 1378.8926716754. The cubic root of 1901345 is about 123.8854517946.

The spelling of 1901345 in words is "one million, nine hundred one thousand, three hundred forty-five".