2542905890 has 32 divisors (see below), whose sum is σ = 5411508480. Its totient is φ = 841788864.

The previous prime is 2542905889. The next prime is 2542905901. The reversal of 2542905890 is 985092452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624302 + ... + 628361.

It is an arithmetic number, because the mean of its divisors is an integer number (169109640).

Almost surely, 2^2542905890 is an apocalyptic number.

2542905890 is an abundant number, since it is smaller than the sum of its proper divisors (2868602590).

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

2542905890 is a wasteful number, since it uses less digits than its factorization.

2542905890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252706.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 2542905890 is about 50427.2336143874. The cubic root of 2542905890 is about 1364.9291093706.

The spelling of 2542905890 in words is "two billion, five hundred forty-two million, nine hundred five thousand, eight hundred ninety".