197538011 has 8 divisors (see below), whose sum is σ = 228172464. Its totient is φ = 169016320.

The previous prime is 197537993. The next prime is 197538013. The reversal of 197538011 is 110835791.

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

It is not a de Polignac number, because 197538011 - 2¹⁰ = 197536987 is a prime.

It is a super-2 number, since 2×197538011² = 78042531579672242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197538013) 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, 527990 + ... + 528363.

It is an arithmetic number, because the mean of its divisors is an integer number (28521558).

Almost surely, 2^197538011 is an apocalyptic number.

197538011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

197538011 is a deficient number, since it is larger than the sum of its proper divisors (30634453).

197538011 is a wasteful number, since it uses less digits than its factorization.

197538011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056381.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 197538011 is about 14054.8216281816. The cubic root of 197538011 is about 582.3940001266.

The spelling of 197538011 in words is "one hundred ninety-seven million, five hundred thirty-eight thousand, eleven".