1201489671 has 16 divisors (see below), whose sum is σ = 1706037984. Its totient is φ = 749512704.

The previous prime is 1201489631. The next prime is 1201489693. The reversal of 1201489671 is 1769841021.

It is not a de Polignac number, because 1201489671 - 2¹⁵ = 1201456903 is a prime.

It is a super-3 number, since 3×1201489671³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201489631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59266 + ... + 76911.

It is an arithmetic number, because the mean of its divisors is an integer number (106627374).

Almost surely, 2^1201489671 is an apocalyptic number.

1201489671 is a deficient number, since it is larger than the sum of its proper divisors (504548313).

1201489671 is a wasteful number, since it uses less digits than its factorization.

1201489671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136370.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1201489671 is about 34662.5110313722. The cubic root of 1201489671 is about 1063.0981128100.

The spelling of 1201489671 in words is "one billion, two hundred one million, four hundred eighty-nine thousand, six hundred seventy-one".