135415690 has 8 divisors (see below), whose sum is σ = 243748260. Its totient is φ = 54166272.

The previous prime is 135415667. The next prime is 135415691. The reversal of 135415690 is 96514531.

It can be written as a sum of positive squares in 2 ways, for example, as 133010089 + 2405601 = 11533^2 + 1551^2 .

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

It is a super-2 number, since 2×135415690² = 36674818196352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135415691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6770775 + ... + 6770794.

Almost surely, 2^135415690 is an apocalyptic number.

135415690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135415690 is a deficient number, since it is larger than the sum of its proper divisors (108332570).

135415690 is a wasteful number, since it uses less digits than its factorization.

135415690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541576.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 135415690 is about 11636.8247387335. The cubic root of 135415690 is about 513.5187777547.

The spelling of 135415690 in words is "one hundred thirty-five million, four hundred fifteen thousand, six hundred ninety".