1949162987 has 2 divisors, whose sum is σ = 1949162988. Its totient is φ = 1949162986.

The previous prime is 1949162983. The next prime is 1949163043. The reversal of 1949162987 is 7892619491.

It is an a-pointer prime, because the next prime (1949163043) can be obtained adding 1949162987 to its sum of digits (56).

It is a weak prime.

It is an emirp because it is prime and its reverse (7892619491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1949162987 - 2² = 1949162983 is a prime.

It is not a weakly prime, because it can be changed into another prime (1949162981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974581493 + 974581494.

It is an arithmetic number, because the mean of its divisors is an integer number (974581494).

Almost surely, 2^1949162987 is an apocalyptic number.

1949162987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949162987 is an equidigital number, since it uses as much as digits as its factorization.

1949162987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 56.

The square root of 1949162987 is about 44149.3260084455. The cubic root of 1949162987 is about 1249.1541983848.

The spelling of 1949162987 in words is "one billion, nine hundred forty-nine million, one hundred sixty-two thousand, nine hundred eighty-seven".