1901147 has 2 divisors, whose sum is σ = 1901148. Its totient is φ = 1901146.

The previous prime is 1901131. The next prime is 1901177. The reversal of 1901147 is 7411091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1901147 - 2⁴ = 1901131 is a prime.

It is a super-2 number, since 2×1901147² = 7228719831218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1901117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950573 + 950574.

It is an arithmetic number, because the mean of its divisors is an integer number (950574).

2^1901147 is an apocalyptic number.

1901147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901147 is an equidigital number, since it uses as much as digits as its factorization.

1901147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1901147 is about 1378.8208730651. The cubic root of 1901147 is about 123.8811513002.

It can be divided in two parts, 1901 and 147, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1901147 in words is "one million, nine hundred one thousand, one hundred forty-seven".