1951208142 has 16 divisors (see below), whose sum is σ = 4202602320. Its totient is φ = 600371712.

The previous prime is 1951208141. The next prime is 1951208153. The reversal of 1951208142 is 2418021591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1951208141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12507667 + ... + 12507822.

It is an arithmetic number, because the mean of its divisors is an integer number (262662645).

Almost surely, 2^1951208142 is an apocalyptic number.

1951208142 is an abundant number, since it is smaller than the sum of its proper divisors (2251394178).

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

1951208142 is a wasteful number, since it uses less digits than its factorization.

1951208142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25015507.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1951208142 is about 44172.4817278812. The cubic root of 1951208142 is about 1249.5909364415.

The spelling of 1951208142 in words is "one billion, nine hundred fifty-one million, two hundred eight thousand, one hundred forty-two".