2195507740 has 24 divisors (see below), whose sum is σ = 4630363920. Its totient is φ = 874432128.

The previous prime is 2195507681. The next prime is 2195507771. The reversal of 2195507740 is 477055912.

2195507740 = 11² + 12² + ... + 1874².

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2195507693 and 2195507702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230910 + ... + 240229.

It is an arithmetic number, because the mean of its divisors is an integer number (192931830).

Almost surely, 2^2195507740 is an apocalyptic number.

2195507740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2195507740 is an abundant number, since it is smaller than the sum of its proper divisors (2434856180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2195507740 is a wasteful number, since it uses less digits than its factorization.

2195507740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471381 (or 471379 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 2195507740 is about 46856.2454748564. The cubic root of 2195507740 is about 1299.7056019747.

The spelling of 2195507740 in words is "two billion, one hundred ninety-five million, five hundred seven thousand, seven hundred forty".