137820146 has 8 divisors (see below), whose sum is σ = 208358400. Its totient is φ = 68367348.

The previous prime is 137820113. The next prime is 137820157. The reversal of 137820146 is 641028731.

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

It is a super-2 number, since 2×137820146² = 37988785286922632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271046 + ... + 271553.

It is an arithmetic number, because the mean of its divisors is an integer number (26044800).

Almost surely, 2^137820146 is an apocalyptic number.

137820146 is a deficient number, since it is larger than the sum of its proper divisors (70538254).

137820146 is a wasteful number, since it uses less digits than its factorization.

137820146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542728.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 137820146 is about 11739.6825340381. The cubic root of 137820146 is about 516.5403294755.

Adding to 137820146 its reverse (641028731), we get a palindrome (778848877).

The spelling of 137820146 in words is "one hundred thirty-seven million, eight hundred twenty thousand, one hundred forty-six".