1950428699 has 2 divisors, whose sum is σ = 1950428700. Its totient is φ = 1950428698.

The previous prime is 1950428687. The next prime is 1950428723. The reversal of 1950428699 is 9968240591.

It is a weak prime.

It is an emirp because it is prime and its reverse (9968240591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1950428699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1950428699.

It is not a weakly prime, because it can be changed into another prime (1950428639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975214349 + 975214350.

It is an arithmetic number, because the mean of its divisors is an integer number (975214350).

Almost surely, 2^1950428699 is an apocalyptic number.

1950428699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1950428699 is an equidigital number, since it uses as much as digits as its factorization.

1950428699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 1950428699 is about 44163.6581252052. The cubic root of 1950428699 is about 1249.4245242228.

The spelling of 1950428699 in words is "one billion, nine hundred fifty million, four hundred twenty-eight thousand, six hundred ninety-nine".