149870891543 has 2 divisors, whose sum is σ = 149870891544. Its totient is φ = 149870891542.

The previous prime is 149870891519. The next prime is 149870891557. The reversal of 149870891543 is 345198078941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149870891543 is a prime.

It is a super-2 number, since 2×149870891543² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149870899543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74935445771 + 74935445772.

It is an arithmetic number, because the mean of its divisors is an integer number (74935445772).

Almost surely, 2^149870891543 is an apocalyptic number.

149870891543 is a deficient number, since it is larger than the sum of its proper divisors (1).

149870891543 is an equidigital number, since it uses as much as digits as its factorization.

149870891543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 149870891543 in words is "one hundred forty-nine billion, eight hundred seventy million, eight hundred ninety-one thousand, five hundred forty-three".