1963139 has 2 divisors, whose sum is σ = 1963140. Its totient is φ = 1963138.

The previous prime is 1963133. The next prime is 1963153. The reversal of 1963139 is 9313691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1963139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1963133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981569 + 981570.

It is an arithmetic number, because the mean of its divisors is an integer number (981570).

2^1963139 is an apocalyptic number.

1963139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963139 is an equidigital number, since it uses as much as digits as its factorization.

1963139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 32.

The square root of 1963139 is about 1401.1206229301. The cubic root of 1963139 is about 125.2132679274.

Adding to 1963139 its sum of digits (32), we get a triangular number (1963171 = T₁₉₈₁).

The spelling of 1963139 in words is "one million, nine hundred sixty-three thousand, one hundred thirty-nine".