197015901 has 8 divisors (see below), whose sum is σ = 262877664. Its totient is φ = 131249040.

The previous prime is 197015887. The next prime is 197015933. The reversal of 197015901 is 109510791.

It is a happy number.

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

It is not a de Polignac number, because 197015901 - 2¹⁰ = 197014877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197015971) 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, 18730 + ... + 27291.

It is an arithmetic number, because the mean of its divisors is an integer number (32859708).

Almost surely, 2^197015901 is an apocalyptic number.

It is an amenable number.

197015901 is a deficient number, since it is larger than the sum of its proper divisors (65861763).

197015901 is a wasteful number, since it uses less digits than its factorization.

197015901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47451.

The product of its (nonzero) digits is 2835, while the sum is 33.

The square root of 197015901 is about 14036.2352858592. The cubic root of 197015901 is about 581.8804415434.

It can be divided in two parts, 1970 and 15901, that added together give a palindrome (17871).

The spelling of 197015901 in words is "one hundred ninety-seven million, fifteen thousand, nine hundred one".