1020091379 has 2 divisors, whose sum is σ = 1020091380. Its totient is φ = 1020091378.

The previous prime is 1020091253. The next prime is 1020091381. The reversal of 1020091379 is 9731900201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9731900201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020091379 is a prime.

Together with 1020091381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1020091879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510045689 + 510045690.

It is an arithmetic number, because the mean of its divisors is an integer number (510045690).

Almost surely, 2^1020091379 is an apocalyptic number.

1020091379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020091379 is an equidigital number, since it uses as much as digits as its factorization.

1020091379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1020091379 is about 31938.8694070407. The cubic root of 1020091379 is about 1006.6527688509.

The spelling of 1020091379 in words is "one billion, twenty million, ninety-one thousand, three hundred seventy-nine".