1977419099 has 2 divisors, whose sum is σ = 1977419100. Its totient is φ = 1977419098.

The previous prime is 1977419071. The next prime is 1977419117. The reversal of 1977419099 is 9909147791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1977419099 - 2¹⁶ = 1977353563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1977419999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988709549 + 988709550.

It is an arithmetic number, because the mean of its divisors is an integer number (988709550).

Almost surely, 2^1977419099 is an apocalyptic number.

1977419099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1977419099 is an equidigital number, since it uses as much as digits as its factorization.

1977419099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 56.

The square root of 1977419099 is about 44468.1807475862. The cubic root of 1977419099 is about 1255.1613997488.

The spelling of 1977419099 in words is "one billion, nine hundred seventy-seven million, four hundred nineteen thousand, ninety-nine".