1951609650902 has 4 divisors (see below), whose sum is σ = 2927414476356. Its totient is φ = 975804825450.

The previous prime is 1951609650863. The next prime is 1951609650911. The reversal of 1951609650902 is 2090569061591.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487902412724 + ... + 487902412727.

It is an arithmetic number, because the mean of its divisors is an integer number (731853619089).

Almost surely, 2^{1951609650902} is an apocalyptic number.

1951609650902 is a deficient number, since it is larger than the sum of its proper divisors (975804825454).

1951609650902 is an equidigital number, since it uses as much as digits as its factorization.

1951609650902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975804825453.

The product of its (nonzero) digits is 1312200, while the sum is 53.

The spelling of 1951609650902 in words is "one trillion, nine hundred fifty-one billion, six hundred nine million, six hundred fifty thousand, nine hundred two".