144162691 has 2 divisors, whose sum is σ = 144162692. Its totient is φ = 144162690.

The previous prime is 144162647. The next prime is 144162713. The reversal of 144162691 is 196261441.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (196261441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144162691 - 2⁷ = 144162563 is a prime.

It is a super-2 number, since 2×144162691² = 41565762952722962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144162391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72081345 + 72081346.

It is an arithmetic number, because the mean of its divisors is an integer number (72081346).

Almost surely, 2^144162691 is an apocalyptic number.

144162691 is a deficient number, since it is larger than the sum of its proper divisors (1).

144162691 is an equidigital number, since it uses as much as digits as its factorization.

144162691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 144162691 is about 12006.7768780801. The cubic root of 144162691 is about 524.3455985491.

The spelling of 144162691 in words is "one hundred forty-four million, one hundred sixty-two thousand, six hundred ninety-one".