6435138149 has 8 divisors (see below), whose sum is σ = 7191374400. Its totient is φ = 5707439200.

The previous prime is 6435138119. The next prime is 6435138167. The reversal of 6435138149 is 9418315346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6435138149 - 2¹⁶ = 6435072613 is a prime.

It is a super-2 number, since 2×6435138149² = 82822005993430292402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6435138119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7133849 + ... + 7134750.

It is an arithmetic number, because the mean of its divisors is an integer number (898921800).

Almost surely, 2^6435138149 is an apocalyptic number.

It is an amenable number.

6435138149 is a deficient number, since it is larger than the sum of its proper divisors (756236251).

6435138149 is a wasteful number, since it uses less digits than its factorization.

6435138149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14268651.

The product of its digits is 311040, while the sum is 44.

The square root of 6435138149 is about 80219.3128180490. The cubic root of 6435138149 is about 1860.0271847301.

The spelling of 6435138149 in words is "six billion, four hundred thirty-five million, one hundred thirty-eight thousand, one hundred forty-nine".