2151509026 has 4 divisors (see below), whose sum is σ = 3227263542. Its totient is φ = 1075754512.

The previous prime is 2151508993. The next prime is 2151509053. The reversal of 2151509026 is 6209051512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1784978001 + 366531025 = 42249^2 + 19145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537877255 + ... + 537877258.

Almost surely, 2^2151509026 is an apocalyptic number.

2151509026 is a deficient number, since it is larger than the sum of its proper divisors (1075754516).

2151509026 is a wasteful number, since it uses less digits than its factorization.

2151509026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075754515.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 2151509026 is about 46384.3618690610. The cubic root of 2151509026 is about 1290.9647703416.

The spelling of 2151509026 in words is "two billion, one hundred fifty-one million, five hundred nine thousand, twenty-six".