2154351700 has 36 divisors (see below), whose sum is σ = 4702003740. Its totient is φ = 856752640.

The previous prime is 2154351697. The next prime is 2154351709. The reversal of 2154351700 is 71534512.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 358117776 + 1796233924 = 18924^2 + 42382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154351709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44965 + ... + 79564.

It is an arithmetic number, because the mean of its divisors is an integer number (130611215).

Almost surely, 2^2154351700 is an apocalyptic number.

2154351700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154351700 is an abundant number, since it is smaller than the sum of its proper divisors (2547652040).

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

2154351700 is a wasteful number, since it uses less digits than its factorization.

2154351700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124716 (or 124709 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2154351700 is about 46414.9943445004. The cubic root of 2154351700 is about 1291.5330810629.

The spelling of 2154351700 in words is "two billion, one hundred fifty-four million, three hundred fifty-one thousand, seven hundred".