1967925897 has 36 divisors (see below), whose sum is σ = 3352002420. Its totient is φ = 1109106432.

The previous prime is 1967925887. The next prime is 1967925901. The reversal of 1967925897 is 7985297691.

It can be written as a sum of positive squares in 2 ways, for example, as 537497856 + 1430428041 = 23184^2 + 37821^2 .

It is not a de Polignac number, because 1967925897 - 2⁷ = 1967925769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1967925887) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1629 + ... + 62757.

Almost surely, 2^1967925897 is an apocalyptic number.

It is an amenable number.

1967925897 is a deficient number, since it is larger than the sum of its proper divisors (1384076523).

1967925897 is a wasteful number, since it uses less digits than its factorization.

1967925897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61222 (or 61212 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 63.

The square root of 1967925897 is about 44361.3108124636. The cubic root of 1967925897 is about 1253.1495821340.

The spelling of 1967925897 in words is "one billion, nine hundred sixty-seven million, nine hundred twenty-five thousand, eight hundred ninety-seven".