1949047619 has 2 divisors, whose sum is σ = 1949047620. Its totient is φ = 1949047618.

The previous prime is 1949047589. The next prime is 1949047649. The reversal of 1949047619 is 9167409491.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1949047589) and next prime (1949047649).

It is a cyclic number.

It is not a de Polignac number, because 1949047619 - 2¹⁶ = 1948982083 is a prime.

It is a super-2 number, since 2×1949047619² = 7597573242259138322, which contains 22 as substring.

It is a Sophie Germain prime.

1949047619 is a modest number, since divided by 47619 gives 1949 as remainder.

It is not a weakly prime, because it can be changed into another prime (1949047649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974523809 + 974523810.

It is an arithmetic number, because the mean of its divisors is an integer number (974523810).

Almost surely, 2^1949047619 is an apocalyptic number.

1949047619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949047619 is an equidigital number, since it uses as much as digits as its factorization.

1949047619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1949047619 is about 44148.0194232992. The cubic root of 1949047619 is about 1249.1295527179.

The spelling of 1949047619 in words is "one billion, nine hundred forty-nine million, forty-seven thousand, six hundred nineteen".