1906153 has 2 divisors, whose sum is σ = 1906154. Its totient is φ = 1906152.

The previous prime is 1906139. The next prime is 1906183. The reversal of 1906153 is 3516091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1432809 + 473344 = 1197^2 + 688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906153 is a prime.

1906153 is a lucky number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1906123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953076 + 953077.

It is an arithmetic number, because the mean of its divisors is an integer number (953077).

2^1906153 is an apocalyptic number.

It is an amenable number.

1906153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906153 is an equidigital number, since it uses as much as digits as its factorization.

1906153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1906153 is about 1380.6349988321. The cubic root of 1906153 is about 123.9897884411.

Subtracting from 1906153 its sum of digits (25), we obtain a triangular number (1906128 = T₁₉₅₂).

The spelling of 1906153 in words is "one million, nine hundred six thousand, one hundred fifty-three".