197005921652 has 6 divisors (see below), whose sum is σ = 344760362898. Its totient is φ = 98502960824.

The previous prime is 197005921631. The next prime is 197005921657. The reversal of 197005921652 is 256129500791.

It can be written as a sum of positive squares in only one way, i.e., 146271062116 + 50734859536 = 382454^2 + 225244^2 .

It is a super-2 number, since 2×197005921652² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197005921597 and 197005921606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197005921657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24625740203 + ... + 24625740210.

It is an arithmetic number, because the mean of its divisors is an integer number (57460060483).

Almost surely, 2^197005921652 is an apocalyptic number.

It is an amenable number.

197005921652 is a deficient number, since it is larger than the sum of its proper divisors (147754441246).

197005921652 is a wasteful number, since it uses less digits than its factorization.

197005921652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49251480417 (or 49251480415 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 197005921652 in words is "one hundred ninety-seven billion, five million, nine hundred twenty-one thousand, six hundred fifty-two".