1961829379 has 2 divisors, whose sum is σ = 1961829380. Its totient is φ = 1961829378.

The previous prime is 1961829371. The next prime is 1961829383. The reversal of 1961829379 is 9739281691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1961829379 - 2³ = 1961829371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1961829371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980914689 + 980914690.

It is an arithmetic number, because the mean of its divisors is an integer number (980914690).

Almost surely, 2^1961829379 is an apocalyptic number.

1961829379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961829379 is an equidigital number, since it uses as much as digits as its factorization.

1961829379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The square root of 1961829379 is about 44292.5431534474. The cubic root of 1961829379 is about 1251.8541824327.

The spelling of 1961829379 in words is "one billion, nine hundred sixty-one million, eight hundred twenty-nine thousand, three hundred seventy-nine".